concentration supports life. Increase in concentration is directly related to increase in good life, calm mind, increased awareness, reduced ego hence less attachment to pleasure and hence less misery, happy life, clarity of mind, willingness and dedication to work, good biological performance like sound sleep, easy digestion etc. Concentration helps memorize and analyse better. 

ways to improve concentration 

1. Read

2. Work

3. solve maths, puzzle

4. improving your health- good body leads to good mind.

5. exercise increases blood flow and hence increases concentration