start small with anything you can handle. write it down. it could just be taking a step out of bed. it could be eat 1 vegetable. do this every day. take as long as you need to start building up these small achievements. one step out of bed will evolve into going for a daily walk. daily walks will evolve into regular exercise. the most important thing is to NEVER WAIT for MOTIVATION. you MAKE motivation.
well wishes anon, we're always here for you.