Sure, there might be people with more serious problems than you have, but that doesn't matter. Your problems are your problems and it doesn't make it any easier to deal with them knowing that someone else has it better or worse than you do.

I wish I could find this image I saw yesterday on my FB feed. The general idea was this...

"Telling someone who is sad that they don't have it as bad as others is like telling someone they can't be happy because they'll never be as happy as someone else."

Don't compare yourself to others; instead, channel those thoughts into trying to make it better for yourself. You can do it. It'll be a challenge, but just think about how amazing it will be to have the accomplishment of doing something positive for yourself.