Advice?

Oh my gawd! I’m 16, I weigh about 225 pounds! I’m sick of feeling like this but I have no motivation what so ever. I’ve worked out before when I was happy, but not I’m just sad that I eat my feelings away. I gained about 40 pounds in a year especially because of depo so I got off it and now I want to start losing weight because I’m not happy with it rn. Any tips? Tricks? Advice? Thank you.