You know how, supposedly, if you say something enough it starts to come true? How there have been studies that when teachers are told certain kids are smarter than others, by treating them as such, the kids end up fulfilling those expectations even if they were all equal to start?
When you have had a really good day and are feeling particularly pleased, tell yourself, "It's good to be me." Not in your head - out loud. Even a bit smugly. Even if there are other people in the room that will hear you. No need to justify it or make a list of why. Just say it, because right at that moment, it is true.
Now say it the next day. And other days too. You can even say it all the days of a week just to see how it feels. Maybe the other people around you will want to say it too.
On a kind-of crap day, say it. On a really crap day, think back to when you last said it and why you said it and know that it was true and will soon be true again.
Because it certainly is good to be me. And I'm damn sure it is good to be you.
