Cant cope with my depression?

I don't understand, you started out sounding very depressed and ended up saying you are confident then you say you feel your life is over! You are only 23, that is where life truly begins to open up all those doors and you are more free to have fun and make great choices for yourself. At 16, you really don't have all that opportunity, really. You need to go out now, forget about what you didn't do the past couple of years. Don't waste the next 18 years of your life upset about something you cannot change. When you are 40, like me, if you feel the same way you do now it will be much worse. It still won't be over though. I am in college, my oldest daughter is moving out with her boyfriend, I have an okay job...the point is, is keep moving forward...don't get caught up in your own pity party. That may sound harsh but get harsh with yourself and get out there!!!! You can do it because only you can do it. By the way, I have suffered depression all my life and I took medication for it and it helped but you have to give it time and find the meds that work for you.