I'm drowning. Help!

So I'm a 25 year old (26 next month) male and I have this 'problem' where I loose interest in things and people super quickly. I would try dating and then two months later I don't feel attracted anymore, I try hitting the gym and then the next week I'm like "I was doing alright before so...". I have failed to keep jobs even. Everything seems to drain me. I have only one friend, who we speak like twice a month and haven't seen him this whole year. I don't go home anymore (parent's house) and I don't speak to any of my relatives. I'm a lone freak. I'm also the shyest person I've ever met. I'd rather conductor aende na my change than ask for it. I don't even bargain for stuff.

I'm always excited in trying new things but the interest quickly plummets. I do not like ant part of my life. I envy outspoken people. I don't think I have a purpose anymore. I'm just living. I believe someday I might just end my life.

I read somewhere that you should talk about what's consuming you and here I am. I'm begging to be saved! Help!