Stop putting an effort into those who show no effort towards you - Very true. I've opened up my eyes and realised that I put in way too much effort with people with very little in return. If I didn't make any effort or have to ask I wouldn't hear from them. All of my effort will go towards my kids the rest can jog on!
There are things you don’t want to happen, but have to accept, things you don’t want to know, but have to learn, and people you can’t live without but have to let go. Some circumstances and people come into your life just to strengthen you, so you can move on without them. - via: http://www.marcandangel.com/2012/07/30/12-things-to-know-before-letting-go/