Grit and perseverance are the ability to strive for your goals despite the difficulty. And they may be one of the most important things that you can develop! Research has shown that sticking with your goals, even when things get very difficult, is key to success.
If you look at people who have accomplished a lot, chances are they have a lot of grit. Great athletes, scientists, moms, dads, soldiers, inventors, social workers, artists, teachers and musicians all have grit. Lots of it.