You have alot of company with this issue. There recently was such study done and if i remember correctly the statistics were something like 60 or 70% of people who were found to procrastinate.
Some people however were found to work better when they waited till the last minute! So if it works for you, enjoy life and accept that this is part of your makeup, as long as you don’t put off important things as wanting to daven and then realizing it’s time for mincha and you missed shachris!