Your main purpose when you are at a final table is to play your A game.
When you are short stacked you are aiming for a double up which will lead you at least to the final top 3 places when the money is.
So when you are short stacked you need to wait for
hands with
equity in order to push - and not necessarily the absolute monsters - . It's way more preferably and effective to open push a marginal hand than to be the caller with a marginal one. Apparently late positions favor you to be the aggressor and you can shove wider.
You must understand how the ICM [Independent Chip Model] takes its place in final tables and also how ranges kinda change if the tournament is a turbo or a regular speed one.Don't be afraid to push and try not to be too passive because you won't get action when you want to, like
TheNutz4You has already mentioned. Try to make your opponents speculate about your hand and not put you instantly at the top 5% of your range for instance.
Last but not least you must understand that it is statistical impossible to win every final table we make but we must play optimally. Cheers