Getting the most out of yourself - Use your mental energy correctly - get rid of pride. Know who you are and what your journey is. Give yourself a goal for the day - maybe it is "make an effort to count the suit that is led". Be your own judge, be happy if you achieve your goal or motivated for next time - forget what others might think of you. That is the path to playing your best and improving quickest.
People that spend time at the table worrying about what others think will always be limited, their mental energy is in the wrong place.
Playing 4ths partner leads the 2 of spades - we are focused on what the layout of the suit is. It is 4-3-3-3. If you are focused on your goal you'll be happy with yourself if you do that a few times in the session.
The most important signals
Double or bid?
Bid as high as possible!
Defending against a multi 2♦
Transfer or not?
Nv compete
How strong vulnerable?
Preempt suit quality
6322 and 7222
2♣ opening
Doubleton lead
Passive lead
When to lead active
1N with 5422
Takeout double
Negative double
Splinters
Competing partscore
Try not double
Ace Ace King
2 level overcall
Lead Trumps #1
Lead Trumps #2
7 card GOOD suit
To open or not, pre-empt or not
Let the opponents play when they are misfitting
The strongest hand
Be practical
Losing trick count bidding
Favourable vulnerability
Be a nuisance
Big trump fits
What does 3♥ show?
Mental game
6+ card suits
Use puppet stayman more
Don't push slam in competition
The unusual 2♠ bid
Intermediate jumps
Conventions
Choice of equal cards
Don't false card
Never preempt with 11 points