Many many great inputs here and a vexing issue for skiers breaking through the deeper snow / heavy powder dilemna. Skis today sure make difference and techniques necessary on old school stuff have transformed as has equipment. But fundamentals still hold and practice & miles are the real teacher. If you don't have a very knowledgeable ski buddy or access to someone qualified to teach, it is a sound investment to buy in. This assumes you don't have this level of knowledge (technique) yet. A few of the best things I ever picked up, before you begin a run, look downhill and pick out the first 3 turns. Set the rhythm and keep it. Weight distribution / body position matter a lot. When skiing, always try to keep hands up & in front where you see them, nice bend at the knees, break a little forward at hips, head upright looking foward. Body weight should feel like it's slightly to the ball of the foot but there's a lot of folks who maintain a more neutral weight-centered stance. Find what works best and different conditions can warrant switching around a bit. The better posture for heavier powder, more central or slightly back, Light stuff that you are skiing what's under it, you may want better edge feel so a tad ball-of-the-foot weighting. Lots has been said already, just my .02$