My dog has Separation Anxiety, how can I cure this?

You need to solve this slowly ie put him in a room or put him somewhere he cant get to you or see you and then walk away for maybe 10 secs then go back give him a cuddle and give him a treat (as long as he didnt bark/whine) then the next time stay away a little longer and keep repeating then over time try putting him somewhere he can see you and start again. do you catch my drift? also look up ceasar millian (sorry if that spellings incorrect if you type it into google it will recognise him) im sure he had an eppisode about separation anxiety. i hope this helps! good luck