Be like the cat that got the cream
That kitty obviously got her cream and is very happy!
And there's no doubt she'll eat the cream with great pleasure!
To be like the cat that got the cream is an idiom.
(about a person) To be pleased with his/her ability or what he/she has done.
If you are like the cat that got the cream, you are very happy because you are happy about or satisfied with your own talent, accomplishment, or what has happened to you.