You knew it, someone is going to suggest you to get help!
The thing with professional help is, sometimes one has to just try repeatedly. Not everything will work, but eventually something will, and those things that didn't work, will pave way for the kind of help that will work. It can be an elimination process. One other thing is patience. I "quit" getting help several times, because I was impatient and rebellious in a way. I downplayed the help I was getting, and my answer to everything was "I know better". Sometimes I did, but at certain point I had to humble myself, because I got in such a bad condition that I had no choice. In time, I got better to a point where I could live without constant depression, anxiety, insomnia, self-hate or fear. After a long crapshoot and partaking into the process myself (quit some destructive habits), even some of the meds worked, and I also started to get along with my therapist/psychologist as well.
So get that help, as much as you can, because at some point it will work. People will take you seriously if they are good at what they do. But we should never lie about what we do or feel. If you cut yourself, tell them. Like you said, you live a double life. Many depressed people do, and so did I. I didn't tell the truth to others, sometimes even pushed them away, and then cried by myself how I'm alone and nobody understands me. It makes absolutely no sense to do this, but many of us do. That's why it's good how you at least acknowledge it. It's a start.
I also started to read the Bible and really think about it. At some point I was sure I would have to kill myself, so I prayed for God, prayed for Jesus to help me out of it. I didn't feel it then, and it took a long time, but I believe I was carried over the worst. There were times I just had to endure, to not die, but at my lowest point I kind of made the decision to have faith. Just like in getting help, it's an active form of hope. And I made it personal. I was trying to understand God and myself. I still do.
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You say you have to be holy, and you say you have to do a-b-c. Why? Is it the same trap many religious people, often myself too, fall? When we're in that trap, it becomes about us. It becomes about us and our performance. It becomes an act, rituals with no other purpose than to soothe our fear of hell. That kind of faith will not last, and if it does, it can destroy more than it can ever build.
Look at what Paul said:
"So I find this law at work: Although I want to do good, evil is right there with me. For in my inner being I delight in God’s law; but I see another law at work in me, waging war against the law of my mind and making me a prisoner of the law of sin at work within me. What a wretched man I am! Who will rescue me from this body that is subject to death? Thanks be to God, who delivers me through Jesus Christ our Lord!
So then, I myself in my mind am a slave to God’s law, but in my sinful nature a slave to the law of sin."
We can't, and we never will, be holy. We will always be sinners. It's about where our heart is. Do you believe Christ died for our sins, for our behalf? Do you believe He is a savior, instead of a tormentor? Do you believe He is the good shepherd, like He said, the kind who gives His life for the sheep? Because that's why Christ came. Not to give us more chains, not to make us think we can be perfect, but because we needed God himself to save us, because we never could. We needed Christ to live a sinless life and die on our behalf, carrying our sins in His sacrifice. This way, God gets all the glory, Christ alone is the savior, and none of us can pretend to be better then the other under God's grace, even though many of us still rebel and make themselves to be something special, holy or good.
When Christ reprimanded people, it wasn't because He hates us. He made it clear how each and every one of us is a sinner, and if we manage to not do something bad, we're often still thinking about doing bad things, making us sinners in our hearts. When asked: "who then can be saved", He replied that to a man it is impossible, but to God all things are possible. So do not stare at your burdens, your fear of hell or your sins. Christ took them. Accept it, and give it all to Him. We do not have power over God, so how could our sins have more power than the sacrifice of Christ? The prodigal son is a good reminder.
And who were the people Christ reprimanded the most? Religious people like pharisees. Many of who Christ Himself said to be the ones who tie burdens on people's backs, without touching those burdens themselves. He said many of them are wolves in sheep's clothing. But with Christ, the burden is light: "Come to me, all you who are weary and burdened, and I will give you rest. Take my yoke upon you and learn from me, for I am gentle and humble in heart, and you will find rest for your souls. For my yoke is easy and my burden is light.”
I also believe that God is not the father who gives us scrorpions or serpents when we ask for bread or water. I believe He is called "father" for a reason. It's in the Bible that the relationship of a father and child on earth is representative to what God is for us. If I had a father who hates me and beats me every time I do something wrong, and tells me that I deserve death, what comes out of it? I would fear for my life, I would be crippled, I could not love or trust anyone. But if I have a father who's loving, patient and wants me to grow up well and to love my neighbour, He will not beat me or threaten me with death. He will guide me, and pick me up if I fall, and be there when I need His support. That kind of love produces good fruit, and Christ talked a lot about good fruit. I believe God loves us, and that God truly is love, pure love. It's us who rebel against it. We stare at our sins and barricade the doors from the grace that sets us free from it, because we want to give so much power for ourselves. We find it so hard to believe that Christ actually died for us, and we try our hardest to do it ourselves, to somehow earn that grace which is already freely given. Sometimes we just have to "surrender", and accept that grace. That way, we become grateful and relieved, and if we do something good to others, we do it with a happy heart, not out of fear. That kind of fruit is a good fruit.
I hope I didn't ramble too much. Said a prayer for you, hoping for guidance and comfort to come your way. I hope you manage to get help and lay some of your burdens down, and hang on to hope. You are loved, and you are free to love as well. God bless.