Which one should I read first, The Untethered Soul or The Psychology of Money (both on the other end of the spectrum, I know 😂)

Had both of the mentioned books bought for me at Christmas by my family. About to finish The Count of Monte Cristo (long old journey but I’ve loved every minute of it), so I need to start a new one. Which do you recommend first? Both not long books really so hopefully can have both of them read by the end of February.