Time . . . .

Has anyone else noticed that what used to take minutes to accomplish now takes hours?  I can't help but realize that things that I used to do in a very few minutes now can take an entire day and often I can't remember what I started out to do in the first place.  It is very difficult to accomplish simple tasks when something else pops up in my head and I wander off to do that and forget what my original mission was.  It just seems to me that there ought to be an easy way to handle this yet.  Any ideas would be appreciated.