Physical activity can make you wound up and make it difficult to go to sleep for several hours afterwards. One way to combat this is to go to bed early enough for your body to wake up autonomously before the alarm clock goes off.
Wearing form-fitting and stylish clothing will make you feel attractive encourage you to eat in a way that shows you care about your appearance and your body. Constant and chronic stress can be a major cause of weight gain, so you should really find some time to relax.
If you want to carry a water bottle, you can drink while exercising. Join an exercise class appropriate for your level of activity and your medical condition.