Sometimes explaining to your family that you have decided to become a vegetarian/vegan is not easy, especially when they have grown up thinking that eating meat/fish/dairy from time to time is necessary for a healthy diet.
For that reason they might push you to eat some animal product from time to time, especially if, as it is in my case, you only get together for holidays like Christmas when meals are an important part of the festivity.
Also, they can refer to how boring it must be eating only vegetables and say things like: "This piece of meat/fish/... looks much tastier! Don't you think so? Don't you want a bite?"
How can I deal with this issue? What would be a good way of convincing them that my lifestyle is not inherently unhealthy?