Advice please!

I just stood on the scale (for the first time in a while) and saw numbers that I didn't even recognize. And not in a good way. Ever since I graduated high school, started college, and started working full time, my stress and weight have been skyrocketing quickly. And because of these issues, I've been failing at relationships, and failing at loving myself. I need some advice. How do I get through this? How do I motivate myself to get through this? At what point should I accept myself as I am and welcome relationships back into my life, and how do I get there? I know I should be comfortable in my own skin, but lately I haven't been, and I don't have the time nor the energy to go to a gym.. what should I do?