If that were possible, there would be no need of the atonement.
I have to wonder what you think "all of them" is. Jesus was quite clear that the rich man was just fine. I think he kept all of them, in fact, he said he did and Jesus saw no issue with what he said. What he asked for was on par for an individual who would not need the atonement. It's clear from the Savior's response to his disciple's dispair, who could be saved? His response, with God, nothing is impossible. It is interesting that in one telling of the event, we get an additional view of an equally impossible situation, that of marriage and never ever getting a divorce. Clearly, most men who get married are committing adultery because there are a LOT of divorces in the world and they may not even know it. Who then can be saved?
So, we have two bad situations here. Almost no one is going to give they have to the poor and follow Christ and almost every marriage relationship is nd adulterous one.
I think we strive to obey all of God's commandments, but the only commandment we can keep consistently is to have faith.
Well, that's a very born-again idea. As long as you have faith, you can beat a person's brains out and you'll be fine. Clearly, that doesn't make any sense.
I appreciate your question on this subject, but clearly, those who follow Christ must do something different than those who don't. Faith requires action. Without it, faith is dead. So, the natural follow on question, is how does one demonstrate sufficient faith to be able to lay claim on the promises?
