I feel like every game I lose on SC2 ladder is a new lesson I learn.
for instance "it's important to get orbital command that way you have scan that way you don't lose a giant army to five DTs when you have the other guy almost dead."
on the bright side this is getting easier. feel like I mostly keep better track of my economy. always buildings scvs and supply depots, mostly keeping my money low. these are things which were alien to me coming from WC3 (I'm used to going up to 50 food and then saving up money there) but I'm getting the hang of it I think.