At The End -- In The End

At The End (of Something) # At The Beginning (of Something)

 At The End of The Month / January / The film

 I’m going away at the end of January/ at the end of the month.
 At the end of the concert, there was great applause.

 At The Beginning (of Something)

 At The Beginning of January
 At The Beginning of The Concert

In The End # At First

 In The End

 We had a lot of problems with our car. In the end we sold it and bought another one.
 He got more and more angry. In the end he just walked out of the room.

 At First

 At first we didn’t like each other very much, but in the end we became good friends.