This is Don from ITI, TAITRA, and welcome to ITI English Phrases.

You know, I'm feeling a bit tired from my busy schedule,

so today I just want to play it by ear.

We use the phrase "play it by ear" when we want to do something

without special attention to preparation or planning.

Here's another example. If someone asks me:

"Hey, Don. Where are you going on your vacation?"

"I'm going to meet a friend in Bangkok,

and then we're just going to play it by ear."

"play it by ear" is also a common response to the very common question:

"What are you going to do this weekend?"

"I'm not sure. I think I'm just gonna play it by ear."

So in other words,

this is a very handy phrase when you feel like doing something,

but you're not quite sure what.