Jenny,
There is not one single person in the world who doesn't have problems. Some of us need more help than others, that is nothing to be ashamed of. Feeling bad and weak and inferior or depressed is a reflection of what life has done to you, not of who you really are. If you can just recognize and diagnose yourself as to what it is that is wrong in your life, you can then find out what you need to do to try and fix it. All you need is the motivation to try, and you will be okay. Just don't give up on yourself. You have a core of strength that never dies and can help you if you only find it and use it. I wish you strength for that.
L.