In reply to Matrix:
Try to identify your weaknesses, if you have any, in particular climbing styles. For me i was terrible at steep climbing, even with huge holds, i just could not hang on for more than a couple of moves. Some weaknesses could be for technical climbing, being dynamic and not overly static, trusting small feet or even a certain grip type such as open-hand or pinching. For me i used to crimp everything, but as soon as it became a half-crimp or open hand i would be terrible. If that is so force yourself to grab holds in a different grip style, open handing as much as you can will protect you from injury well too.
Do you use volumes, aretes and smears on the wall as well as you could. Some people get tunnel vision and just use the holds on a problem and no features that may be in.
In my case i was terrible at steep jug hauling but a few months dedicated to exactly that helped me past a plateau in my ability. Watch others climb the same problems as you and see how they do it better. Ask others you climb with to assess you as you climb a route, looking at body position and footwork.
I'd avoid getting tempted to start fingerboarding or dedicated finger strength exercises as the biggest gains you can make in the first years of climbing will be through climbing alone. If finger strength is truly a weakness then get onto the overhanging walls and start climbing on small holds.
Sorry for the essay, i am no expert but have seen my way through countless plateaus and have avoided injury completely. All this is just opinion gained from countless googling and UKC forum searching in the same way you are now.
Good luck!