Well, u could always check your mum's progressed chart so see for sure .
For me, I reckon it's more of an attitude thing. As an adult, thinking about work and responsibilities totally drains me. As a child and a retired person I know I will have the mentality of living life no matter what before I die!
If you want the vedic view,it depends on your vedic moon sign star. There are 3 energies -Rajas , Tamas and Sattva.
Rajas is an A type personality( kinetic energy), Tamas ( potential energy) and Sattva ( neutral) . Each star has a pattern.