Getting the best of it

I can tell you exactly when and how I’ve got my best work done. And it wasn’t multitasking.
I spent one month in Thailand (fantastic country) working and traveling. It was great, but I didn’t get the best of it. My work wasn’t the best and the sightseeing activities were… just okay.
What I learned was that, to do something worth doing, you have to focus on one thing. 
Your best work is when you just focus on one thing at a time. (Read Deep Work for more information.)
When you travel is exactly the same. You should focus only in traveling and get the best of it. Because if you are thinking in your job, the experience is by far not that great.
Multitasking is just a feeling of being busy. But busyness is not the same as productivity.
Just one thing at a time.