Wondering in Europe -- Lost n found

Today is the 15th day i wondering in Europe.

Had been to France, Germany, Croatia. Now i am in Austria by incidence and will be heading to Czech Republic tomorrow morning.

Few days ago, i decided to send a postcard to my two sisters. However, i found that i cannot remember my Hong Kong address where my sisters and i moved in 6 months ago.

Did i ever consider that apartment as my home or i just treat it as the hostels i move in and out during my trip in Europe?

From different place to place, i had lost few belongings on the way:
a bottle case, lost in France;
a mickey mouse hand band, lost in Croatia;
a cap, just lost on the train when i arrived at Austria this afternoon.

Maybe i have to find something to save me from my careless, otherwise, next thing i may lose is myself or my way home.