committed

adjective4

1. •
   ready to put a lot of effort into something and to keep going when it gets difficult
2. •
   Obligated or locked in (often by a pledge) to some course of action.

   • I'm committed to walk(ing) at least 7 miles daily.
3. •
   Associated in an exclusive (but not necessarily permanent) sexual relationship.
4. •
   (rhetoric) Required by logic to endorse the conclusion of an argument.