The two life-changing technological changes I’ve seen are the advent of television and the advent of home internet use (smart phones included). Arguably, the internet has more far-reaching implications for the way we live now, including our security (identity theft, etc.).
But also, arguably, both technologies have invited addictive behavior and have reduced the amount of time most people spend enjoying the company of others and of themselves. Interestingly, meditation practices are becoming more popular each year–no coincidence! Humans are complex animals who need solitude to pay attention to what they are feeling in order to monitor their reactions.