Or simply shift his mindset, if he will think that Bitcoin is difficult to understand then it will be hard for him. But if he thinks that it's very easy because a lot of us understands it, then it will be not as difficult as it is.
And then he can go and move from that, maybe start slow and just be a short term holder.
When he got the experience already, then move to a bigger picture, long for Bitcoin as a long term investment and then imagine what it will bring to him, i.e financial freedom.
I would be glad if OP read everything that was provided to him and become the long-term hodler from the beggining.
It is tough doing it from the start, but it's the right way, in my opinion.