You mean unpopular choices that will be opposed by the deepstate. What needs doing is obvious. Tough choices means choices where you don't really know what is right and what is wrong. What to do about resources you don't have and won't get isn't tough. It's obvious. Stop promising them and stop counting on them and line up the people who got you in this situation and blame them.
Tough choices mean EVERYONE has skin in the game, EVERYONE feels pain, EVERYONE contributes and/or sacrfices something.
The only way this will work is if we are all in this together, from the poor to the uber rich.