I don't want to sidetrack the thread too much but the hashtag speaks to me as I've had the exact same thing. I also get this cricket imagery in my head depending on how I'm travelling on a particular day or if things are going well/badly in general. For example, when I have a dilemma or am in the midst of solving a problem, a first-person video of defending a ball full-face of the bat somes to mind. If I have a win, perfect on-drive. The Germans have a word for this sort of thing, Kopfkino. When (usually of the more intellectual persuasion) people bag sport as useless or ultimately pointless, I really can't get behind that at all. In some ways playing sport develops you more emotionally like few things can because your sense of both success and failure are fleshed out. You, as a person, are laid bare with a bunch of blokes cheering around you and depending on whether you've succeeded or failed, that can be with you having taken a wicket, scored the winning run or with your stumps spread wide and the guys screaming are cheering your ultimate failure. Shapes you emotionally as an adult so I don't find it surprising at all that associated images come back often later in life.
Anyway, as far as the thread goes, at the lower levels what separates the best from the rest tends to be physical. Bats can't handle anyone bowling 130Km/h+ and bowlers aren't quick enough to trouble the good bats. Once you get to 2nd grade, though, the differences become mental. There are guys playing 1st and 2nd grade who have the physcal and technical games to play Tests but they're missing other things, whether it be planning, strategy, quick adjustment to the circumstances or just holding your nerve against someone who's also a good operator. So I tend to fall on the side of guys like Social when he says even if you've played some 1st grade, you're going to get your arse kicked at Test level and it's not for physical reasons.