We all believe in one cause that we consider our purpose, for which we live. Like how some people say, eat to your heart, in any case, one day we all are going to die, then why not die doing what you enjoy?
Though your purpose can keep changing from time to time. What is the most important matter today, might change tomorrow. But what is your purpose today? What is that if today is your last day, you will want it to happen. Live for that purpose. Make it come true, today. Do whatever it takes to make it happen. If we live our life that way, every day, we will always live in the present working on our purpose.
By the way, do share, what is most important for you today? For me, to gather as much knowledge as I can and put it into action while laughing out to my heart.