One of the things I found helpful is to go look at a care facility before one is needed which gives one time to process all the emotions that go along with such a huge change. Also, it gives you the ability to learn about what services places provide and compare layouts, services as well as to determine what you believe is needed--before life gets too stressful and you have to make a move NOW. There are usually long waiting lists (years) so if you find a facility you may truly wish to consider, put your name on the list with the right to turn it down should you determine you are not ready at that time.
It is very hard not to look ahead to the future; one breath at a time, moment by moment. Some day today will be 'the good old days.'