"It is time to forget the past and celebrate a new beginning" can be expressed using a variety of synonymous phrases. For instance, "let's turn over a new leaf and start afresh," "it's time to bid farewell to the past and embrace the present," "let's leave the past behind and look towards a brighter future," "time to start anew and leave old memories behind," or "it's time to start a new chapter and forget the past." Regardless of the words you choose, the sentiment remains the same: it's time to move on from past hardships and welcome the start of a new, positive journey.