How do I show my friends and family that I do want to get better?

Something that could help is to tell them directly. Communication goes a long way. This includes acknowledging where you're at now, acknowledging where you want to be and acknowledging what it takes to get there. Actions speak louder than words. Start taking the necessary steps needed to fix your situation. Aim to be better than you were yesterday and to complete at least one important task each day to help you grow over time. Change doesn't happen overnight. Don't be afraid to ask for help if you can trust your friends and family. If anything, asking for help only proves to them how much importance this holds for you - importance that makes you swallow your pride.