How do I motivate myself to get back into shape?

I used to go jogging (slow-run/fast-walk) everyday during the summer. then i got a full time job where i worked from 2-10, straight after high school, and i had never had an actual job before then so i put all my energy into that. I started working so much i forgot to eat most of the time, i would munch on anything constantly, and after i would eat a heavy meal. then sleep, and i wouldn’t wake up soon enough to go jogging again. I gained a good amount of weight and i know i’ve always had weight issues most of my life. I don’t hate my body like i did in high school because i’m more than just a body, i have a personality and i feel good about myself. but honestly i feel guilty that i can’t show that on my outside too. i loved going out once in a while just to clear my mind and all that. now i would like to get myself out there again and start moving. i’m not looking for beach body matierial or weight lifting champ kind of thing. I want to be able to run up a flight of stairs and not get dizzy or run a mile without thinking i need an ambulance. I live with people who think food is the only way to someones heart… except my dad, he was a track star back in the day, and can still run pretty well, he just doesn’t have the time anymore, and with this weather it just doesn’t come as naturally to him anymore. but i don’t like the way he motivates. “When i was your age i never weighed as much as either of you.” or “I don’t understand why my children are so lazy come on, get up or you’ll sink into the couch.” and usually this is after school and gym… I used to do it just because he would make me feel bad, after i started doing it just to make him be quiet, then i did it to forget how bad everybody made me feel… i have to say that was the time i did it for me, to run away from it all if you will… but now… I just don’t know how to motivate myself back into it anymore. My parents both say i’ve put on way too much weight and that i’ll die. but i don’t really listen to their conserns anymore. I don’t want to make them look good. no way, i’m in it for me. and its not like they follow thier own advice. So it kind of went down hill after the job thing tho… I never had this cottage cheese thing going on with my legs and it scared me. I had no idea what happened until i realized it was because i didn’t move as much as i used to and ate what i could afford at the time all the time. But I’ve started making better choices with food instead. instead of a bag of chips i’d rather have a granola bar or an orange. I just need to prep myself to get back into it Motivation is my main consern but i’m hoping someone can shed some light and give me some tips that may have helped them with that. i’m going to start waking up earlier too, work is now very inconsistant, i’m not used to waking up at 6 am to work or sleeping in the next day to work at 2 pm or work grave yard shifts. i’m not looking for something that has to be strict, on the dot kind of regimen. just some advice would be nice.