Did a 6 month round the world trip a while back and a friend asked me for tips, so I dumped everything I wish I knew earlier.
Good waterproof boots are worth the space. Wet feet will ruin your day fast. I skipped umbrellas and never missed them.
If you are not vibing with someone, walk away. You meet a lot of people solo traveling and not all of them are worth your time. You do not owe anyone an explanation.
Get a debit card with no ATM or foreign fees. Makes life way easier and less stressful. Still keep a little USD or euros tucked away just in case.
You will overpack. Accept it. Ship stuff home or give it away as you go. Especially when climates change.
Be super organized with pockets and bags. Passport and wallet should always live in the same place. Saves time and anxiety.
Learn hello and thank you everywhere you go. Small effort, big payoff.
Always have proof of onward travel. Refundable tickets work if you need one fast.
Food tours are a solid way to try street food without destroying your stomach.
Schedule rest days. FOMO is real, burnout is worse.
For nightlife, plan two nights. First night you scout, second night you actually hit the good stuff.
When bargaining, know the price you are happy paying. If it goes over that, walk.
And yeah, you will mess something up eventually. Miss a flight, get scammed, whatever. Forgive yourself and move on. It is part of the deal.