Weight gain

Cheyenne
I have already gained 30 or so pounds .. I am 29 + 3 ... I just feel like whenever I eat I'm never truly full ... What can I do to help with more weight control . Not dieting but just maintaining .. Or is it even possible ? Hahah. I don't want to be too much over weight and I honestly thought I was doing good with my weight but I guess not lol.