Gripping your golf club correctly means the club is held in your fingers and not your palms for all shots except putting. The fingers are the grippers of your golf club and really for most all daily activities. That being said try not to strangle the club at address so that the wrists can cock correctly. During the course of a full swing by the time you contact the ball, your grip will have naturally become tighter preparing for impact. The old adage hold the club like a small bird might hold true at the beginning of your swing but by impact that little bird would explode with proper technique. Vary your initial grip pressure as you work on this but be firm and aggressive by impact. Tell that ball where it’s going and enjoy the ride!!