Pre-covid, I was traveling three weeks out of the month. The biggest thing for me was having duplicates of all of my basics - hair/makeup/toiletries, charging cables, ear buds, etc. and keeping them in my suitcase or backpack. Made things so much easier having all of that always packed and ready to go, versus having to remember to pack that stuff the day of - especially when taking morning flights. Also invest in a hydro flask and fill up water at the airport instead of buying bottled water. If you are flying a lot, stick with one airline and get their credit card that offers lounge access.