If this feels insurmountable, find one vegetarian dish you like and put that into your rotation, and you’ve already improved.

My best tip is to go for something that’s by nature vegetarian like an indian dal or some of the great lebanese stuff like hummus, muhammara, baba-ganoush etc, rather than “I can’t believe it’s not meat!” products.

Repeat untill you’re on a mostly vegetarian diet you like. If you get close to full vegetarian, start easting vitamin-b supplements.