Planning your week can be a good and manageable tool for creating a better study structure or more free time. When planning your everyday life, it is important to consider both: study, possibly work / volunteer work and time for leisure. If you have planned breaks, then it´s easier to permit yourself free time, because it was already in the plan - so it can be a way to keep the bad conscience away.
It is important to remember to be realistic: do you have a difficult subject this semester that requires more preparation or are you going on a longer holiday (so you have to increase your preparation in the surrounding weeks?).
We are all creatures of habit, so it is important to stick to habits that are beneficial, but we also need to challenge ourselves and our way of “studying, so we can develop new beneficial habits!