Headstrong and Self-indulgent

Headstrong adjective - Given to resisting control or discipline by others.

Self-indulgent and headstrong are semantically related. In some cases you can use "Self-indulgent" instead an adjective "Headstrong".

Self-indulgent adjective - Given to or marked by excessive gratification of one's desires.

Headstrong and self-indulgent are semantically related. Sometimes you can use "Headstrong" instead an adjective phrase "Self-indulgent".