I was a christian but... :(?

I grew up in a church, I 20 now and i was in church for about 15 years, I played drums at my church for about 9 years, One day i found a good job and just started to care ore about my money then going to church and seeking God. It got t o a point that i just never went back, My church found another drummer, i went recently and its like no one cares that im gone. Well since i left church i have forgot about God. I dont pray i dont read the bible i curse alot ive even smoked. mind you i had never smoked before. well i feel like my life is hitting the end of the road. Everything is going wrong for me now. I argue with people all the time, ive had some arguments at work, I have money now but its like w.e and to top it all of when i was seeking God before i was always working out and lifting weights i was always in shape, Now i dropped the Gym and picked the the spoon ive gained about 30 pounds.I failed 2 classes in college so yeah everything is just going wrong now. My mother tells me that i was born to worship God so that why i feel like this ( i just teared). When i try and seek God i just give up when i do something.I do want to go back to how i was i was happier and my life was always stress free, I was happy but its not easy and i feel like im too late. what do yyou think? please dont make fun of me or anything, I just needed ti get it out and sorry if i misspelled anything im typing this real fast.