Making a plan to achieve your goals is as easy as some would suggest: A pen & paper.
But:If your goals are to achieve your plans; that is different story. This is the way I tend to approach the task as it opens up the opportunity to plan objectively & more comprehensively, which in turn allows you to set more achievable goals. If you don't understanding what I'm saying then you should check my works on the subject. Hope I have helped in some respect tho atm.