Can I get a list of all the tweaks I've made to my system over the years?

Is it possible to get a list of all the various tweaks I've made to my system? Over the years I've probably installed and uninstalled a bunch of apps, tweaked and untweaked a bunch of configuration settings, ran a bunch of scripts that did god knows what to my system. To be fair, it's probably my fault for not writing them all down.

However can I somehow figure out how different my system is from a clean install? For example my system didn't come with any swap space so I added some. I remember doing that recently. However suppose I forgot that I did that (because it might have been a long time ago) how would I have rediscovered that and other changes I might have made to the system?

Thanks 👍.