I want to describe a situation in which someone gets interested in something/someone to such extent that he forgets other activities and normal life, and just cares and thinks about the beloved activity/person. This is the sentence in which I want to use this word:
I devoted myself to this/her/him so (the word) that ... .
One word that comes to my mind is to use the adjective form of ascetic. But I'm not sure it's the best or even a correct choice.