When you are injured and unable to pursue your passions, when you are strained by your responsibilities and distant from the activities you love.
Turn to content that would inspire you. Take the jealousy it makes you feel and let it encourage you. Fill yourself with it until you can't stand it anymore. Then explode with pursuit proving to yourself you can pull through and achieve whatever it is you want.
Don't forget the value of ones own happiness in the pursuit of life.