It is all about the mental ability , toughness and winning spirit that keeps you the performance on higher standard. My entire experience and passion towards chess I recommend you to follow three important aspects..
1) Respect opponent : No matter it is , about the age, sex, experience, dont ever understimate or disrespect your opponent.
2) Patience : Especialy in to the middle game. Take your time and also always remember your mental, physical strengths in each movement.
3) First attack is the best defence : Attack in the first line and show how best you are executing a well deciplined position in the board.
Try to master in Sicilian Defence, Ray Lopez - Marshell Attack, Queens Gambit.
Best
Manoj
