Proper technique in climbing will help you scale the hardest rock faces. There are a few Golden Rules of Rock climbing.
The first, keeping your arms straight, will help you conserve immense amounts of energy. Bent arms deplete strength quickly while straight arms and hanging on your skeleton will help conserve your energy.
The second rule, being aware of your center of gravity, helps keep your body in balance. Knowing that you are stable will help you stay relaxed, help you make moves, and make you climb better.
The third golden rule of climbing, being mindful of your feet, is especially important for California climbers. Much of the rock around California is slabby which means standing well on your big toe, pushing with your feet and being precise.
In this video, Adam explains the Golden Rules of Rock Climbing. Check it out.