When a task is weighing on me mentally, I need to remind myself to take a moment then get it done. The longer I delay, the worst it will feel for me. The satisfaction in finishing the task will be the same regardless, if not less, because of feeling stupid about letting the task linger for so long.
I don’t like how much control a simple task can have on my mind. I most often put off the task not because the task itself is difficult (i.e. writing an email), but the message I am sending is not positive. Delivering bad news is never easy and shouldn’t be delayed.
Do the task; do not delay.