Don’t improve all things at once.
Ever wondered why you couldn’t finish a project, eat right and meet a friend as planned on the same day? It’s not because you’re not disciplined, it’s because you try to do more than you can.
Create a list of what you want to change and place the easiest issues first.
When you finish improving one aspect, only then can you start the next step. The first steps are important, when you see the results of your efforts, it will inspire you to go further.