To help you make positive changes in your life, it is a good idea to keep a success journal. At least once a day, write down something you succeeded in doing. Maybe you took a walk during your lunch break, or read a chapter in a book you meant to get around to, or cleaned out a drawer in your cabinet.
Occasionally flip through your success journal and notice all the successes you are accumulating. I recommend a physical book – the act of moving a pen over the page reinforces the experiences in a way that tapping on a keyboard doesn’t.