How do you do it??

How do you overcome a negative body image?? I'm almost 8 months pp and I used to feel so good about myself right after having my son. I lost all the baby weight by the time I came home from the hospital and by a week pp I was down a few lbs under pre pregnancy weight. At 4 months pp I was 20 lbs down. Now I look in the mirror and I hate my body so much. I haven't weighed myself in several months but I feel like I've gained weight again. I tried working out but it's so hard to find time and energy and to stay motivated for more than a few days. I have people tell me that I look good ect but I don't feel good about myself. I was 135 lbs at 5' 9" 3 years ago, came off birth control and gained 20 lbs. Gained 20 more in the year after I got married to 175. Was 194 at the hospital before I gave birth. Last time I weighed myself I was 153. I just hate the way I look and I hate looking down at my flabby stretchmark covered belly and idk how to feel better about myself...