Mental toughness is built by doing something that is hard over and over again, especially when you don't feel like doing it. Our society has conditioned us to believe that there should be no discomfort, to stop when we are uncomfortable. But the discomfort we feel when we're doing a challenging workout is an important part of the strengthening process. Push through your down days when you're not feeling your best (unless, of course, you are injured or ill). Dogged determination requires keeping your feet moving forward through inconveniences, discomfort, and insecurities to reach your goals. - Jim Afremow
"Unless commitment is made, there are only promises and hopes; but no plans." ―Peter F. Drucker
“Desire is the key to motivation, but it’s determination and commitment to an unrelenting pursuit of your goal – a commitment to excellence – that will enable you to attain the success you seek.” -Mario Andretti
Indeed, whatever we do, commitment is vital. It's crucial for us to achieve our goal either in life or in working environment.