Working at height

Working at height has always been a challenge especially for individuals having phobia for Heights, sometimes maintenance in buildings requires working at height, the specially when it comes to Reservoir tank for water storage sometimes when this storage is faulty and the tha it requires the worker to go up height to either fix it or bring down, 2 weeks ago I have to help my presents fix their reserve water tank because it was faulty and It needed to be fixed which I helped in fixing as water is always necessary for our regular day too day activities.