Sad here. I am a Christian but that is what I feel now: love is not all-embracing -- you either have it, or you don't. Nobody need to show you any love if they don't like you or they don't know you. There isn't complete help that can lift you up and bring you into full protection and love. You are not entitled to anything which you think you deserve. I am sick, thin, lonely, depressed and negative. I wouldn't commit suicide but I genuinely don't want to live any more... Actually I want to get a life, yet the world is too horrible for me.

btw I like your replies, they are good. (nebula your icon cat is so cute -- makes me wanna cry. I wish I am a lovely person too)
I don't know if you are saying that stuff about love in response to what I said, but just to clarify, the practical technique that I was talking about involves valuing universal love, brotherhood, unity or interpersonal harmony in general. The kind of love that one person has for another person, or that a person has for a pet, doesn't have anything to do with it. The reason we get depressed is because we value something higher than we value universal love. Other things are more important to us than universal brotherhood and this causes problems.
Here are some examples of events and why these things make us miserable. If we value love or universal brotherhood more than anything else, we will still find life tolerable despite these events.
I am sick. I am miserable because I value health more than love.
My house has burned down. I am miserable because I value shelter more than love.
Others have lied about me. I am miserable because I value my reputation more than love.
I have been rejected by someone I am attracted to. I am miserable because I value that person's companionship more than love.
I am starving to death. I am miserable because I value nutrition more than love.
Someone else is being intolerable and stupid. I am miserable because I value other people being reasonable and intelligent more than I value love.
Someone else is wrong and won't listen to me. I am miserable because I value being right and having other people know I'm right, more than I value love.
Someone has disrespected me. I am miserable because I value this person's respect more than I do love.
My dog had cancer and I had to have him euthanized. I am miserable because I value the companionship of my dog and my memories of him more than I do love.
I have done something I shouldn't have. I am miserable because I value my guilt and memories more than I do love.
I have done something embarrassing. I am miserable because I value my personal history more than love.
Someone else has prevented me from realizing my goals in life. I am miserable because I value my goals more than love.
etc.
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Conflict/strife/anger etc. is like an inflammation while love is like healthy tissue.
Loving a specific person is valuing that person, which is a bit dangerous. As long as you value universal love more than you value that person or animal, the relationship will not cause you that much pain. But if you value the person or animal more than universal love, you will have problems. If not now then someday.
Valuing universal love doesn't mean you go around loving individuals. You can BE LOVING to someone without loving that person. There is a big difference. As far as what it takes to be happy, you don't even have to like anyone personally, let alone love them. You only have to be loving, which is a natural result of valuing universal love and brotherhood above all else.