Rob Dial argues the most powerful habit isn't cold showers or meditation, but keeping promises to yourself. When you consistently do what you say you will do, you act in alignment with the life you want to create.
Chapters
There is one habit that you need to focus on to change your life, and it's not these fad habits that you see the self help gurus talking about. It's not cold showers. It's not waking up at 4am to check off 74 things on your morning routine to do list. It's not meditation. It's not affirmations. Don't get me wrong, all of those can help, but none of them are as powerful as this one. And it is to do what you say you're going to do, to follow through to your word, to yourself. That is the highest act of self love. Because it is you saying, I love myself too much to let myself down. I will do what I need to do to create the life that I want, and I will follow through for me because I'm worthy of that. If you create that habit above all other habits, your life will change.