A tired week

This is a tired week for me. i had thought that a bussiness trip would be a fun trip, but it turn out a tired experience. this week i had a bussiness trip to guangdong province for two days. i and my colleague were arranged to live in a hotel for one night. but it  is hard for me to fall asleep, i don't know why. when i come back from bussiness trip, a customer visit our company and my boss arrange me to take care of him. i guide him to visit many supplier. most of my time was spent on it. i only can do my dayly work overtime. it is really a tired week for me. and travel a lot by car is very tired.