Hi......... 
 the train dream immediately made me think of > future......  not being sure of your destination, where it is taking you , and not knowing what the future holds can be "uncomfortable".....
 Are you questioning your future  lately? ..... Are you wondering what direction to take ?....
  The celebrating with friends....... have you been spending alot of time by yourself?......it may be telling you you need to get out more and get together with others.......  socialize more........
 Getting out more , will open doors to the future that you did not expect.......
 Hope this helps..............