What we have learned about strength and developing it is that it occurs by two forms of adaptation.
Addict yourself to process, not outcome.
The conventional advice is always, "If you want to get better at X, then just do X". Frankly, I find that sophmoric and I have never believed that's the prescription.
There are three things I care most about when it comes to bringing on a new coach, and the assembly of our staff at any given point in time is not by mistake.
If you have hit plateaus, it may not be that you need to lift more. It may be that you need to pay closer attention to your conditioning.