I hear you, brother. I really do.
Depression, anxiety, and more can come from demonic oppression and it can come from disorders of the brain and mental health issues. Sometimes life's circumstances can trigger these things and sometimes our own sin can trigger it.
There's no way to find the root of it without competent doctors, counselors, and God's word.
I have suffered from depression and anxiety for years - off and on. I feel your pain.
Do you have a competent doctor and counselor [Not the same thing.] If not, go to your primary doctor or even a local clinic and ask them for a referral for a competent - and you need to use that word - professional. They can run tests and talking things out can REALLY help.
Also, YES, you should be reading the Bible - God's letter TO US - daily or as often as possible.
There are people in the Bible who suffered from mental health issues - even to the point of wanting to die. Four great mean - Moses, Elijah, Jonah, and Job - all wanted to die. But God put a stop to that.
Depression takes time to over come. Meds can help, talking out loud with a counselor [speaking the truth!] can help and God, through his word, can help.
Actually, it's God that raises up competent doctors and counselors. There are some incompetent ones just as with any other profession so you may have to try and try again.
I've experienced help with all three. And I realize that God directed it all.
If you are going to read the Bible, get a translation that is easily readable - NKJV, NIV, ESV, or Living Bible [the revised one].
- Start with Matthew or John. Maybe both.
- Then read Acts or Romans or 1,2,3 John [right before Revelation] or 1/2 Peter.
- Pray before and as you read. Ask God to open your eyes and give you understanding.
God bless you with his mercies.