Spare a thought

No idea whether im becoming weaker, more stupid, lazier or what. I felt ashamed of myself. I don't see any good things in myself and i think that im not fit to be with you all. Maybe im over sensitive but i just feel that im useless. What can makes you all stronger, but not me. It pulls me down, even more. Changes everywhere, life is really so demanding. Things change better, but not me, instead is the other way round. Feels like quiting but... all my efforts would be gone. Work harder, but... im not able to. Useless, really useless, so ashamed.