This brilliant result and performance was built on work-rate, heart and unity.
The deadlock was broken on 36 minutes via a measured close range header from Jamie Brotherton (pictured) after James Hammond's free-kick from the right had been knocked back across goal.
Hendon put the hosts under pressure after the interval and one attack was thwarted by an outstanding save from Tony Di Bernardo and then a goal-line block from Mark Knee while late Hendon substitute Andre Dacosta hit a post.
Brotherton was also involved in the clinching second goal on 84 minutes as his cross-field pass was intercepted by the head of Tom Burton who raced through two defenders and slotted coolly past the visitors' keeper.
Manager Tony Coade said: " Credit to all the boys. They didn't leave a drop of sweat or blood behind in the changing room. The boys are committed, we have the heartbeat back in the club."
The win means Haven move up one place to 15th in the table.
The next home game is on Wednesday when Leiston are the visitors.
Before the game at 6pm, chairman Brian Suckling will launch Stand or Fall, the club's campaign to raise money for the necessary ground improvements to keep Ryman Premier League football at The Sports Park next season.