Usually uncountable; plural self-indulgences is also possible for separate instances.
complaisanceAu sens d’indulgence excessive envers soi-même; registre général. His self-indulgence with expensive desserts eventually affected his health.
Sa complaisance envers les desserts coûteux a fini par nuire à sa santé.
auto-indulgenceTerme possible mais moins courant, de registre plus littéral. Attributive use only; used before another noun to describe something associated with self-indulgence.
de complaisanceEmploi adjectival: qui traduit une attitude d’indulgence excessive envers soi-même. His self-indulgence habits made it hard to save money.
Ses habitudes de complaisance rendaient difficile toute économie.