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Don't over think!
Fish waters or a water where you will catch. I know that sounds obvious, but if you are going to sit it out for one big fish then you may well be sitting out and blanking for a long time. You may need to lower your expectations, you aren't going to catch 20 after 20, you may be having to fish for single figure fish.
Don't 'faff' with rigs, or bait. A knotless knot (possibly line aligned) rig catches most fish over the latest fashionable rig.
Fish your bait to catch, get the carp feeding on it. That may be boilies, or boilies over groundbait or particles.
The more you pressure yourself, the harder it gets, the more you go round in circles.
Fish to your strengths and find the fish. Don't just turn up and fish the last known producing swim, unless you are sure the fish are there.
Don't necessarily pile the bait in, forget piling your spod mix in, a single bait or stringer quietly put in often produces more.