Putting it off is just mailing the stress to next Thursday with extra postage.

Delay does not reduce a task, it only moves it, and it charges you for the move. The thing still has to be done, and in the meantime it sits at the back of your mind taking small amounts of attention all week. By the time you reach it, you have paid twice.

Take what you have been avoiding and do the first five minutes of it today, badly if necessary. Starting is almost always the expensive part, and it is cheaper than another week of carrying it. If it genuinely cannot be done yet, write down when it will be.