Smoke less frequently. Do it at most once a day, preferably less. Try potentiators like grapefruit juice, St Johns Wort, etc.
What you need to do is take a break atleast 2-3 months. Why? Because weed coats certain cells, more think with THC and shit. After 2-3 months, it wares off, and thats when you feel the serious withdrawl. By then get good weed and a bong, and you should be able to get fucked up
thats what i was gonna ask.. whats the quality of your weed? are you really in your 30's? i dont believe it.