Enjoy the ride!!
I really want to get beyond the trite words of "enjoy the journey", but the sentiment is right on. The way the human mind works NOTHING ever feels like a finish line. NOTHING. EVER. You'll never feel done. You'll never feel like you made it. You still have to fill every minute of your day with something that makes you feel alive. That's why obsessing over a specific accomplishment will never be rewarding. You'll get it and the very first thought you will have is "Now what?". That's why it's critical to recognize that the only thing you can enjoy is the journey. The journey is the passage of time itself. And the point of it all is to enjoy the ride, because the ride doesn't stop when you accomplish something. It stops when you die.