Here's one: having no idea how your hair will turn out once it's dry. I can do the exact same thing on two different days, and once my hair finishes air drying it's reacted completely different from one time to another. I know, I know, there are a myriad of reasons for this, but I think this is a problem curlies all deal with at some point.
3a, dense, fairly coarse, normal porosity and elasticity, just below shoulder
Low poo: Giovanni 50 50
Co-wash: aia, suave coconut, salon care
R O: Tresume Naturals, gvpcb
L I: KCKT, gvpcb
Stylers: cjpp, re : coil, kccc, brhg
Oils: coconut, argan
Experimenting with: curls rock amplifier, pantene mousse