I applaud you for working on hard on your game first of all. Second of all, there are a lot of factors as others mentioned. You should always know when to play certains hand and why. Poker isn't about memorization, it's about adapting to every single last factor in each situation.

As for your hand. Do you not play at a room where you can datamine? Even if you have a ton of different players, datamine and table select for as long as you can prior to your session so you have a good amount of stats. Now, obviously you (should) know that your line depends on how they play postflop. For now, if you've played a lot of hands here, you should know what players generally have here when they take these lines even if they are unknown because most players here have the same skill level. What you then need to decide is how they'll play their range to a bet, raise, etc on the flop. Then you have to think about future streets and how they'll play against certain turn/river cards. Also, make sure you know an estimate of what kind of equity you have against their range too as the more equity, the more likely you'll win ld0. Not really sure if this makes sense but mess around with like pokerstove, learn some EV calcs., try to make reads in every hand, experiment, think of how certain cards will affect their range and what the best line is (should I semibluff raise flop and continue if an Ah hits on river?, etc). If you have a lot of free time it's a lot easier. I usually do this kind of stuff in class.