Many Christians interpret “how do I attain eternal life?” as “how do I get to heaven?”. In our Anglican interpretations, this is not correct at all. There is not a heavenly paradise off in the infinity of time and space where you can one day knock on the gate and be allowed in.
No, the Kingdom of Heaven is, and will be, here, on Earth for eternity. Jesus describes how to make that happen starting here and now. Surprisingly, Jesus informs the rich man that his money plays a crucial role in his salvation. He gives him a very clear course of action.
And that command is the radical teaching that we simply have not, perhaps can not, deal with.