I don't read in the Bible that Jesus did say, sell everything, as a message to every person. It was a challenge to a particular wealthy individual whose wealth was a moral stumbling block. He did teach a lot about money, in particular the dangers of loving money, and the importance of sharing with others.
I do not believe our goal in life should be to seek wealth, or poverty. Having genuine peace, or being generous, is not related to your wealth. In my lifetime I have been given a child's money jar and a car from a well off friend when I was stuck. The money jar still gets me.