1)First thing you need to do is leave worries and tensions from your mind. Have a clear and confident mind.
2) Try Yoga.Yoga increases physical and mental abilities .This would be a great way to achieving peace of mind which charges your memory and supports physical health
3) Studies also shows that running ,doing intense exercise also help
4) Another tip is to Make Creative Associations. We remember things which are different and unusual.So try to create a creative images and picture of the things to remember,it will really help. To remember number,try to create some sentence of the number. That way it will be easy for you to remember
5) Study When You’re Most Productive
6) Stay Positive
7) Do good sleep
8) Practice brain games to sharpen your mind and memory