After long holidays or a long time off work, its natural to be a little "slow" to come back to the working routine. But I discovered its possible to work feeling as if you are still in holidays. How? Is just a matter or keeping peaceful and open to listen more than speaking. People are anxious to show their opinion, their side of any situation, their problems wainting for solution... Don't worry. Things were in when you were out, and so they will keep going.
Relax after a long working day doing something you like, remember the places and people you had met during your holidays. Stop & think before get nervous, anxious or before to loose the control of your peace. It will take at least one year for you to take another break, so, try to extend it inside yourself.