I have been practicing proving trig. ident. for the past couple of days... although I am getting better... I wanted to ask are there any strategies that I should be aware of to make the process easier ?
Learn which ones are most essential, and memorize them and practice proving them. Also, unfortunately, you may need to study Trigonometric identities more than 3 times, unless you are just gifted with this; but apparantly you've not found yourself to be. Just work at it longer and more frequently. Just studying trigonometry identities for a few days and then ignoring them from after that will not be enough.