i do it with a friend, so we kinda hold each other accountable.....and , but there's sooooo many hot guys at the gym that we also go to see which pieces of eye candy...(but idk if ur really interested in getting a gym membership) which is another motivation...i pay so much money, i might as well go...also music, music, MUSIC helps tons, with a nice fast song....and like others have mentioned, when ur work urself hard u get that spike of endorphines....i always find that after i exercise, i'm in a much better mood than before and plus another good thing, is when u start seeing results...i've noticed i have MUCH MUCH better endurance and my body is rapidly slimming down....also, another motivation is the summer time...if u set goals about the poundage u wanna lose by the summer, it'll help u get urself up and working out...yes some days are so HARD and my brain is like 'just give up', but i know that deep down, if i did, i'd never be able to forgive myself especially if i fall back in the old habits and i don't wanna regret not working out hard enough by the summer.....but not only does exercise help, but changing ur diet would work wonders as well. i've noticed that by eating healthier, i don't get as depressed as i used to....so u might wanna consider that as well....but good luck with everything!