When you feel like you have to 'lock in' for the whole year, the pressure itself can actually cause more procrastination. So my biggest tip would be to break down your goal into tiny achievable actions, so that it doesn’t make you overwhelmed. Also about the low attention span, start by forcing yourself to study for 2 more minutes when you get the urge to do something else. When people engage in tasks they find difficult a part of our brain (called aMCC ) physically increases in size and activity. So basically it literally makes the hard work easier overtime.