How precious time is.

I am trying to understand that God gives us a finite amount of time to do His work. Sometimes I find it easier to put off what He is asking me to do. Why? I really don't know except it is easier to do nothing. Nothing comes from nothing however. How many times does God honor us with a job and we do not respond? He will search for others to do His work which leaves us with less blessings. Is it worth it?