Being the only one like you in the room is exhausting. It also means someone younger is watching you make it possible.

Standing out as the only one of something in a room costs energy nobody else is spending. You end up aware of yourself in a way that makes everything harder, and that tiredness is not sensitivity, it is the price of extra work. Your being there also changes what the next person believes is possible, whether or not you wanted that job.

Find one person who has been in a similar position and talk with them regularly. Keep somewhere you do not have to explain yourself, and go there often. You do not owe anybody a performance of being fine to make things easier for whoever comes next.