There is always the chance that if you keep postponing what you need to do you will miss getting it done on time. For example I kept attempting to write my blog yesterday but I would get distracted and kept saying I will get it later. After three postponements I ended up going to bed forgetting that I never got it done. I had three chances to get my monday blog done but here it is Tuesday. If it is something that you need done don't postpone it just do it so it can be done on time.