The most important step to controlling your acid reflux is quitting smoking. Yes, butt out that terrible habit! Smoking reduces saliva output, relaxes the esophageal sphincter, irritates the lining of the throat and causes a myriad of other problems. The first step to good health is ending your unhealthy habits like smoking.
Avoid lying down after having some food. You need to wait between two and three hours before lying down, and even more after a large meal. If possible, go for a short walk to get some exercise and sit until the digestion process is over. It is best to have your diner several hours before going to bed.