When the water remains calm, we can easily see the stones or whatever is there underwater.
But when the water is disturbed, or there is so much movement in the water; the water becomes muddy, and we cannot see anything under it.
Same thing happens with our minds.
Even though, there are many opportunities available for us, we are unable to see them with a disturbed mind.
But, when the mind is calm we can see everything clearly. We can see many things available for us that we couldn’t see before even though they were available before.