If you do get them, I recommend playing around with the order you listen to them. The "standard" order appears to be "being/doing/having/getting." I use "being/doing/getting/having." I do this because, to me, "getting + having" = "accumulating." while "having + getting" = "replacing." Everyone's neuro-associations are different, your miliage may vary.

To me, it's a fluid cycle. . .

being + doing = acting
doing + having = appriciating
having + getting = acculmulating
getting + being = allowing