Keep calm be passionate, analyze your opponents, watch the bet sizing limits of opponents, and betting patterns, look for your position standing, dont go without premium hand on UTG or without position, try to steal blinds against tight opponents, also need to play aggresive when you got monster, try to avoid in bets vs strong opponents.
Discipline your strategy and mood, mentally dont be broken after loosing the most of your stack, be ambitious and have strong stimulus to get the final table, adding notes on your opponents, write about who they are how they are going to play, weak opponents most time showing they are
hands at river, try to write them down, watch who is playing with premium hands who are not based on that decisions you can take the right decision against that opponent.
Try to fold most time, when there are 3 bet, 4 bet , cold calls, try to escape that kind of games, most of the time you will get trapped. Manage the table playing against weak opponents, watchout the RAISE bets, usually they go raise with monster, try to analyze who they are how they are betting and you will increase your win rate. GOOD LUCK