With accent marks:
Жизнь прожи́ть – не по́ле перейти́.
To live a life is not the same (not as easy) as to go through a field.
Life is complicated, and living it is not easy. It is a matter of a variety of events and difficulties that a person encounters throughout his or her life.
The closest English equivalent would be "Life is not a bed of roses".
Other Russian proverbs
Live for a century, learn for a century, but die being a fool anyway.
Put your trust in God, but don't make mistakes yourself
An old friend is better than two new ones.
Make a fool pray to God - he will break his forehead.
In a healthy body, healthy mind.
You see your friends in the times of trouble.
The morning is wiser than the evening.
Silent means consent.