@wheresmymojo I think it depends on the 20 years and in the time period you're mentioning you might find more changes than first appear on the surface.
If you just look at the period from 1999, for instance, to 2019, and how much has changed in that timeline. In 1999, 2001 hadn't happened yet (this really was a major world changing event in so many ways), so airline security was still a relatively relaxed affair, compared to how tight it is today; the Internet for the public (not the military or universities) was pretty much in its infancy; and some aspects of the cost of living was considerably more manageable. And smartphones and what they will allow now for the Internet of Things are also game changers. We've been trying out some Smartplugs and a couple of Smart lightbulbs and they've made us much more aware of the power we're using. More devices will follow....
I've kept diaries pretty much my whole life, and I remember 2001 as being the year that petrol, for instance, suddenly shot up in price. House prices also went utterly mad round about that time and nationally have never fallen back to the overall affordability levels of before that year.
That's without even touching on the environmental issues of flood, fire, drought and millions of displaced refugees due in some cases to climate change.
Or take 1912 (Titanic sank) to 1932 and just look at the changes that happened in those 20 years - a World War, the lead up to the Great Depression, suffragettes leading to some women being given the vote, Easter Rising and Sinn Fein, Russian Revolution, the Spanish Flu, the firs Sex Disqualification Removal Act, women at Oxford allowed o receive degrees for the first time, the formation of Plaid Cymru, the first public demonstration of TV...
I do agree though that as individuals what we can do is limited without government buy in world wide. But I still feel like I have to try, so that when I'm (even more) old and doddery and my great nieces and nephews are asking me what I did, I can feel at least I tried to be on the right side of history in a small way.