You will always get to meet people who want to dissuade you. These can be your friends, teammates, even family members. Some people will not like that you do arts either because they are in real bad people or as your parents, they simply want you to learn something which can help you earn money from. Disregard these people and if they are your parents or close friends, try to talk to them and let them know that arts and drawing makes you happy and you want to develop in it as a person.
The most important thing is not to give up as there is a way of arts for everyone. If you are not good in drawing, you can still paint lovely aquarelles, if you cannot paint, you can still become good in sculpting or making mosaics. Arts is for everyone. The most important thing is never to do it for any future money but for the enjoyment of it.