No one promised you roses.
You are entitled to the pursuit of happiness, not happiness itself. The happiness is in the pursuit, of course. It isn’t at the end. If you think it’s at the end, you’ll never get it.
Some things cannot be caught, only chased. But as long as you chase it, you have it. When you think you’ve caught it, it’s gone.
Do not be quick to dismiss effort as a chore, as an unwelcome barrier between you and your goal. The effort is the goal; it always was. You didn’t always know it.
Some games can’t ever be won, you just keep trying to beat your old high score. You are entitled to play again and again. You aren’t entitled to a single point. But as long as you play, the points will come.
Be grateful for every drop of sweat.