Overthinking and stress and anxiety causes depression and lack of concentration power.Which ultimately causes lack of memory ,energy,low mood etc.
Just focus on ur work and education.Dont let ur confidence down, keep it high.
Focus on present day,what will be happen in future is in no one's hand.Fully live present and enjoy ,only then ur future will be happier.
U may consult a psychologist for counselling and psychotherapy.
Health Tips
for overall health
1.sleep 8 hrs at night.
2.avoid too much social media.
3.avoid too much use of mobile pc laptop.
4.avoid mobile pc 1hr before sleep.
5.before sleep may hear good music,or read a good book or can watch a good movie.
6.workout daily or regular morning walk or join gym.
7.Share ur thoughts with ur parents or good friends.
8.Concentrate on ur work,study,passion, hobby.
9.Maintain proper diet.
10.Take proper protein supplement and some time multivitamines.