Frusterated mom

My family consists of 3 boy 2 grandchildren 2 dogs & 2 cats
Durring my childrens younger years before becomming teenagers
life was great i wouldnt say perfect but cant complain.
They were very respectfull,happy and ready to help anyone in need
All our expectations from our children was to repect people including us as parents and
go to school to beable to take care of themselves in the future.
Thats what they did up untill high school .
What a huge turn around .
I knew life would change to a point but theres changed dramitcly
one
They decided to start smoking of course i tried to discourage it didnt get me anywhere
so i dealt with it but they were not allowed to smoke in the house .
However that wasnt enough the started expermenting with drugs and alchol
since all that has started its became so nerve wrecking allthough
i can be happy there alive because of the extreme 2 of them went
Its so hard to believe what drug addiction can hounestly do to a family .
I have tried everything to make my children happy and still do it just isnt enough
The 21 yr old and the 18 yr old is living at home at the moment untill I figure out what to do
my strength is allmost at nill
They dont go to school or work and its a chore to get them to do anything around here unless there paid
neither one of them pays board neither .
Theyhave become very disrectfull to both me and there father
All 3 of them are extremely jelous of each other believe me this is rediculous they have allways been treated the same and i still try to my 29 yr old is upset because i cant reply to his messages right away and that his brothers lives at home rediculouse things like that .The other 2 yells and curses me because there pissed off at whoever
For some reason they think i can fix the world ya it feels great if it was for the right reason but nothing i do is good enough for any of them .I have been going through my kids dru issues for the past 15 yrs and now im at the point i cant handle it any more
I would apreciate it if anyone could give me suggestions on what to do I have stopped handing out money and told them there gonna have to leave but it seems like they let it go in one ear and out the other
Anyways i will go for now this breaks my heart thinking about it
we went from a loving family that backs each other up to hate each other mom can deal with it .