When you're busy enough, "boredom" isn't a thing - it just feels like a break.
It's fantastic and rare.
A chance to think, to put things together in your head, be intentional with moves forward, and actually really wonderful.
"You can choose peace in every moment of your life. We have been taught to believe that when we don’t get what we want, or things aren’t unfolding as we had thought they should, that’s bad and thus we should feel badly. This struggling against what is, this inability or unwillingness to love what is, is the source of all of our suffering and it is entirely our own creation. With practice, we can become as masterful at choosing peace as we have become at choosing anything else."
What makes your mind stronger, and more able to control your emotions, is internal discipline and toughness. No one can teach you this skill; you cannot learn it by reading about it. Like any discipline, it can come only through practice, experience, even a little suffering.