I'm thinking of ditching all my friends
Why would you ditch all your friends?
I'm fed up with my life and I need to concentrate on the future
It's understandable to leave friends if you are looking for a fresh start and to have a new future. However, friends are important and you should consider that you might miss them if you completely cut them out of your life.
Of course I have a reason to ditch everyone. I can't have people around me who don't help make me successful.
People have friends so they have people to spend time with and laugh with. They don't have friends just so the friends will help them through favors to be successful. It's difficult to keep friends if you only want them for personal gain.