moche timche may Hashem bless you with a long healthy life. Obviously you have to daven for success at any age however you need special Zechusim as a senior.
In fact we plead especially to Hashem for this on Rosh hashana yom kippur and all selichos days, when we say Altashlichenu liays Zikna kichlos kochainu al tazvenu it is an acknowledgement of a special Rachamim needed when you get older. If it was just tefilos then kabel birichamim uvratzon in the first verse of shema koleinu would suffice we single this out along with the other special requests.Aside from tefillos in tehillim and throughout tanach we find instances of need of special Rachamim when we get older. Simchas