Planning for the future

being a uni student, I always have to plan for the future in order to get things done - I am capable of long term plans as well as short-term plans - but i never really write these things down - mostly i just plan them in my head while trying to get to sleep in order to keep myself from worrying about them too much. Here's how my planning goes - I first think about what I want to achieve - what are my results going to be. So basically I take an overall picture of a project and then I start to split it into sections - I draw or write up a rough plan after I've thought about it. The next day, ideas start to come and I have to note all these down or remember them - usually if i have time i would jump straight into it or I would denote a time during the week to do whichever section - then I have a finishing date as well - so I gotta really plan it so that I can finish on time. I know its quite a difficult task at first especially if you are trying to do a project that may seem impossible - the first and best thing to do would be to jump straight into it - the more you focus on it - the more you will be able to come up with ideas and understand it.