I don't think you should try to forget yourself at all, it likely won't work. However, what you could do is reinvent yourself.
I assume you don't like yourself much if you have low self esteem and depression, so what don't you like? (You don't have to post a reply to these questions, they are more for you to answer for yourself)
Which of those things can you change? If you are overweight, you can lose weight. If you are a skinny little twig, you can gain muscle. If you don't have any hobbies, you can get some. If you feel you are not very smart, you can take classes or read to learn new things. If you don't feel you've been anywhere, you can travel. If you don't like you job, you can start looking for a new one....the list goes on and on. There are a million things you can do.
The possibilities are endless, you just have to take the first step to getting something accomplished.