lost in manhattan

Today I was walking back to my hotel in NYC, thinking of new product ideas, when I realized I had been walking for longer than expected.  I checked my phone and saw I had overshot my hotel by 4-5 blocks.  So I turned around.  At some point I checked my phone again and saw I had overshot it again by 2 blocks.  Then I turned around again "paying more attention" and I checked my phone again and saw I was on the right block but couldn't find the hotel.  I was on the wrong side of the street. (btw, yesterday I ended up in the wrong subway line).