Understanding when to discuss this with your parents is key. You don't want to come off as imposing, aggressive, or spiteful. Take their feelings into consideration, and be sure to take what they have to say to heart. Sure, you've got a goal in sight and you won't stop until you make it there, but you need to understand that these things take time. Don't expect your parents to change their mind overnight. Seeing things from their point of view and being open to their feelings on the matter can help establish a stronger line of trust between you. It's similar to riding in traffic: Take a minute, breathe, and don't be in a hurry. Rushing very rarely yields positive results.