Inform your bank ahead when you leave your home country to comfortably use bank cards while you are abroad.
Carry at least 2 scan copies of your passport with you and in separate bags.
Do have some money in your belt which is well hidden.
Keep small bottles to fill shampoo/conditioner to avoid carry large sizes as there will be a limit for hand luggage.
If travel with heavy luggage, buy some compression socks so that you can carry a few more items!
Pack your luggage in waterproof bags.
Always get padlocks with you while travelling.
Always discuss the price of the total fare with taxi drivers BEFORE you get in.
Understand the sort of behaviour of your travel country before you arrive. Maintain friendly nature. Respect their traditions as you are a guest.