A good strategy for any class is to wait to use your super. Don't use it immediately as soon as you get it, especially if it's the first time in a match. After the first time you recieve your super, count the amount of supers that the other team uses. Once you've seen four or five enemy players use their super, chances are that they've all used their super. Congratulations, due to your patience, you may now place a Ward of Dawn and it will be much harder for them to get you. Watch out for Warlocks though, they might suicide by running into your ward and deploying a DoT grenade.