The Collaborative International Dictionary of English v.0.48:

Self-indulgent \Self`-in*dul"gent\, a.
   Indulging one's appetites, desires, etc., freely.
   [1913 Webster]

WordNet (r) 3.0 (2006):

self-indulgent
    adj 1: indulgent of your own appetites and desires; "a self-
           indulgent...way of looking at life"- Havelock Ellis

Moby Thesaurus II by Grady Ward, 1.0:

66 Moby Thesaurus words for "self-indulgent":
   acquisitive, ambitious for self, autistic, bibulous, careerist,
   crapulent, crapulous, debauching, dissipating, dissolute,
   egotistical, epicurean, excessive, extravagant, extreme,
   gluttonous, grasping, greedy, hedonistic, immoderate, incontinent,
   individualistic, indulgent, inordinate, intemperate, licentious,
   narcissistic, overindulgent, overindulging, personalistic,
   pleasure-seeking, possessive, privatistic, prodigal, profligate,
   remote, self-absorbed, self-admiring, self-advancing, self-besot,
   self-centered, self-considerative, self-contained, self-devoted,
   self-esteeming, self-interested, self-jealous, self-occupied,
   self-pleasing, self-seeking, self-serving, self-sufficient,
   selfish, sensual, swinish, sybaritic, too much, unbridled,
   unconstrained, uncontrolled, undisciplined, unfrugal, unlimited,
   unmeasured, unrestrained, unthrifty