In reply to 35thelodge:
You don't mention how long you've been climbing, how often you currently climb each month (sessions per month is generally a more useful metric than looking on a weekly basis) or anything about your other sporting activities or background.
As far as 'strategy' is concerned at the highest level the steps are generally:
- climb enough (but not too much)
- approach each individual session sensibly (warm up, don't over exert, listen to your body, think about hydration, food, recovery etc.)
- specificity; match the majority of sessions to your main objectives. Think initially about numbers of moves and any particular weaknesses including mental and tactical.
- cycle through harder weeks of training (volume and intensity) with easier weeks
Most people worry too much about what exactly to do each session but remembering the bigger picture is more important - specificity plus cycles of progressively increasing training impact.
So for you, the most basic question is probably how many times per month should you be climbing. Based on your lead grade the normal answer would be around 12 (grade 6s >> 3 times per week) but your bouldering grade suggests perhaps more. How long you've climbed for and what other exercise you do might influence this decision.
Assuming you are approaching your sessions sensibly and have given some consideration to stretching, antagonist and perhaps core exercises the next issue is specificity. If you want to get better at leading, it's very simple, do lots of leading.
Once you are doing 'specific' sessions the final stage is to look at improving the impact of the sessions on both an individual and cumulative basis This is where most of the replies, so far have all focused but that is looking at specifics rather than overall strategy.
To improve the impact of your sessions the first thing to consider is 'quality' or 'form'. If you're not climbing well all that will happen is that you ingrain bad habits. Therefore, definitely sort out leading easier routes really smoothly before trying anything too desperate. Lots of great suggestions already on the thread on things to consider.
Next you need to steadily up either the volume, the intensity or both. Both is ideal, but remember good form is more important so it may prove easier to up the volume (reps, shorter rests, long sessions, more sessions etc.) rather than jump up in grade too much. Keep focused on the end goal of cumulative training impact and don't get too bogged down in details or lack of immediate improvement.
Finally you need to remember that after stepping things up as much as you can you'll need easier or rest weeks. Often it's only after a proper rest that you actually realise the gains you've made from recent training.
HTH