Bored with being sedentary

Hi everybody! I'm Alle. I used to be super active but a few years ago, my mom got stationed away from me and my dad (we're a military family). As a result, I quit the majority of my activities out of depression. Since then, my mom has moved back in with us but I still haven't picked up those sports that I dropped and now I'm forty pounds overweight for my height and body type. I'm sick of the way I look in the mirror and I'm bored of sitting in front of a computer for hours. Would someone be willing to support me as I attempt to lose all of that weight?