People take you for granted because you’re always available. You let yourself be too available and yes that is posible. Don’t even try to deny it. You do not know how to say no. You feel bad if you do. You feel too much. You don’t say no even when you know it will be a huge inconvenient to you. No matter what it is. You feel like crap and not appreciated at all. Well surprise. It’s nothing new. If people don’t value their own, what makes you think they will value you? Let them miss you. They take you for granted because you have made them believe that you’re always going to be there no matter what.