I want to share how my travel budget strategy evolved from trip 1 to trip 10, because the mistakes are instructive.

Trip 1 (2015, 2 weeks Thailand): no daily budget tracking, ran out of spending money on day 11 of 14, borrowed from a friend, vowed to never do that again. Total spend approximately $2,400 for what should have been a $1,500 trip.

Trip 2 (2016, 3 weeks Vietnam): tracked daily spending in a notes app, still exceeded budget by 25%, identified that transportation costs (Grab and motorbike taxis for convenience) were the main leakage.

Trip 3-5 (2017-2018): introduced the spreadsheet method, started actually staying within budget, discovered the cooking/kitchen hack for food costs.

Trip 6-7 (2019-2020): started using travel credit cards, earned first significant sign-up bonus, used it for flights on trip 7 — effectively free round-trip to Europe.

Trip 8 (2022): first house-sitting assignment, first month-long trip where accommodation was essentially free, discovered the lifestyle compatibility of slow travel.

Trip 9-10 (2023-2025): remote work income, trips are indefinitely extended rather than time-bounded, daily spend is optimized and automatic rather than requiring active tracking.

The arc: from no tracking to sophisticated tracking to internalized habits. The tracking was essential in the middle phase but became unnecessary once the habits were established. You can't skip the tracking phase.