It's not about being extremely lucky or not understanding it is about recognising small progress and being happy with that. It's about celebrating the small wins. For some it does get better and for others it doesn't. To go around telling people that it doesn't is saying to screw it all and never try anything to have a life. This then applies to everything else if that is your attitude. If you're happy to live like that fine that is your choice. To tell others not to say something that can help others is cruel and sad. Just because it doesn't work for you doesn't mean it won't for others. So to those that are saying life will get better then keep saying it and you can ignore it. You have a right to feel how you do just like they have that right. Be mindful of the words you say as people will listen and follow sometimes to their own detriment and others to their own success.