With accent marks:
Волко́в боя́ться – в лес не ходи́ть.
Don't go to the woods if afraid of wolves.
If you are afraid of some difficulties that inevitably accompany any venture, you will never achieve anything, this Russian proverb says.
And in fact, if you are afraid of wolves, which may not be found in the nearby forest, you will never pick up berries or mushrooms.
And if you take the risk and start a seemingly difficult venture, it may not be so scary and you can do it.
The closest English equivalent of this proverb is "Nothing ventured, nothing gained".
Other Russian proverbs
In a quiet whirlpool, demons live.
All is well that ends well.
What goes around comes around.
Make a fool pray to God - he will break his forehead.
Do not look at a given horse's teeth.
Do not dig a hole for another one, you will fall into it yourself.
The apple never falls far from the tree.
You can't spoil the porridge with butter.