be smooth sailing

US /bi smuð ˈseɪlɪŋ/
UK /bi smuð ˈseɪlɪŋ/
"be smooth sailing" picture
1.

to be easy and without problems or difficulties

:
After we finished the hardest part, the rest of the project was smooth sailing.
I thought getting a promotion would be smooth sailing, but there were many challenges.