“The whole world is a very narrow bridge…”
The path of life is full of risks and dangers.
Another way to think about it is that the path of righteousness is very narrow. To truly avoid choices that aren’t holy is a hard balance and a path we need to keep re-finding and returning to.
“…but the main thing to recall is to have no fear at all.”
If we live in fear then we can’t remember to praise and yearn for God with our trust. Also, we can’t serve Him if we’re swallowed by fear. We could acknowledge that to look at the dangers ahead feels painful, but we can’t be overwhelmed if we know that everything in this world will draw us near to His compassion and His love.
When it comes to being righteous, we should always test and suspect ourselves rather than becoming careless or arrogant. Yet we shouldn’t be afraid of our weakness, as if the whole point of life is to do something that others see as perfect. The point is to give an offering to Hashem of the best that we can bring at any moment, so each moment should be a joy, an opportunity, with His help.