Generally speaking, just do work on your work computer. There has been at least one judicial ruling that holds that anything you do on employee owned equipment or networks can be monitored. Save the HN and social media for your phone. Don’t ever connect your personal phone to your employer’s WiFi. If you need your office email on your phone, ask for a work phone or use an old phone.
Congratulations on your life awareness at age 25! Good luck!
If you have not already done this, in addition to maxing out your 401(k), start a Roth IRA and max it out every single year. I regret not doing this.
Compound interest is everything for most regular people to build net worth. Compound debt is the worst.
As the saying goes, there will be friends for a reason, friends for a season, and friends for a lifetime. Friendships will run their natural course. That being said, do your best to maintain friendships you want to try to keep as you get older.
Don't get stuck in the friend zone. Be bold and ask that person out umambigously.
As many dentists say, floss the teeth that you want to keep. I recommend flossing then Water Pik then brushing with a mechanical toothbrush like an Oral-B.
If you don't know, learn how to cook. There are so many resources out there. While not knowing how to cook might be cute or excusable by a potential partner in your 20s, by your 30s or 40s it is no longer funny and definitely a liability.
Don't sit all day. Even standing desks aren't enough. Do some light calisthenics every hour. Push-ups, wall-sits, squats, knee bends.
Make the time to see friends in-person. We are all hardwired to crave IRL social interaction, even the most introverted of us.
You might want to skim Sahil Bloom's book. While it might not the best at being actionable, it might make you think about the next 25 years in better context.