Grip Pressure
When you are holding your club it should feel like a bird in your hands; firm enough that it won´t fly away and gentle enough as to not  injure it.

Putting 
There are two ways of putting
With feeling: see the putting line and feel that the ball goes into the hole, then putt.
With a line. Decide the distance exactly and hit the ball.

I am playing Titleist ProV1 and the text is a line on the ball. 
Point this line directly to the hole aim accordingly.

Bunker shot
Open up the club as much as possible then grip it. In this way you engage
the bounce of your club. Aim the club directly towards the target. This is done
by aiming the body to the left and then swing the body line 
instead of towards the hole.

Mark your balls
It is vital to mark your balls. I do it in a personal way, that is depending
on my mood I make a flower or an an animal or something else. 
Most player though use the same mark everytime and it is all up to you.

One stroke at a time
Do all preparation according to your normal routine. Thereafter hit the ball.
Remember once you have made your stroke it is time to focus on the next one.
Don´t spend energy on the bad ones, you can´t change them anyway.

Braking the waves
To be able to play your best golf , you must be in a good mood and don´t see
the constraints. Feel good and hit good and have a good time on the course, then you succeed!