Generally the hardest part of a task is the beginning. When you have control of when a task starts you also get to choose if you want to delay it.
While you know you have a task to start sometimes that is not enough to get you going. It can be easy to break this cycle of procrastination by taking one small step to move you forward, by setting a time to start the task and counting down to it.
Set a task, set a countdown timer on your phone and when the countdown reaches zero your off.
Give this a try next time you have to complete a task that you sense you might want to avoid. Set a short timer and when the countdown reaches zero see how that changes things.