Please try not to feel guilty and don't measure yourself against anyone else. What is a lot for one person is not many to another. If you've never had a problem with your shoe collection before don't worry about it.
If you want to 'relieve' yourself of some of your shoes then either get rid of any one pair you know you'll never use again (and then perhaps repeat). One pair isn't a big deal so long as it makes you feel better. OR for a major clear out designate a day when you have time to the job and try on any shoes/boots you haven't been wearing for a while and think about if there are any reasons why you don't. Any uncomfortable, too-high, too-low, shabby, need-repairing or ill-fitting shoes in a line and go through each pair to see if any are not worth keeping or what you'd have to do to make them useable again.
I have plenty of shoes and boots (even a few multiples) but only a couple for somewhere I don't have to walk far and only 1 pair (Roger Vivier pour Christian Dior 1956) I can't wear at all as they are teeny tiny and bought just to look at.
Having lots of shoes is not a problem. Having lots of shoes that are unwearable is another thing altogether
Thanks, that is helpful. My goal is to eventually reduce my entire closet/wardrobe, including shoes, and it's hard sometimes with sentimentality!