Weight gain

Since ive stopped drinking i feel as if ive put weight on,and was thinking of buying an electric treadmill for my spare bedroom,then i just need the motivation to get on it,feeling down as usual,trying  to coax myself to go walking.My councellor says i need to have more self discapline,but when i feel like im dying inside alot of the time ,it doesnt seem fair to be like that to my 'child self', little Karl just says fuck off ,leave me alone anyway !!She encourages me to be in a relationship but i have too much emotional baggage and it always goes pear shaped,its sooooooo frustrating.Well i guess i just need to keep ,up the councelling and be positive,what a lovely life ey!!