One of the things I did between flights (whilst walking my dogs) was to mentally visualising the process, including talking through everything as I would in the cockpit. I would start by mentally saying to myself "Ok I am approaching the aircraft" then talk myself through a pre-flight, engine start, taxiing, run-ups, take-off, circuit and landing. I would say aloud all my checks and radio calls as well as what I was doing, even physically moving my head as required. for example I would say " ready for my downwind turn, check left (look left), check right (look right), check over(look forward and up), check left (look left), lead with rudder and then gentle aileron, balance the turn, "Location Traffic, Jabiru XXXX, turning downwind runway 18, location", gentle roll out and balance the plane" (led to some weird looks from other dog walkers but who cares). What I found was that by doing this, once i was in the circuit my head could cope a lot easier with the workload and I still verbalise my intentions to myself, using a if it doesn't sound right then it may not be the right thing to do.
Worked for me