You now have a grasp on mindset.  So, now you need some moves.  There are so many moves out there, where to start?  Remember that you will be under pressure, so any fancy spin kicks or punches that take all day are high risk.  Instead, use low risk, high damage techniques.  Jabs and crosses are a good start, but you need more. 

Most of these high damage moves are banned in the combat sports sector.  These illegal moves have been sold as systems by many experts, but here is a list of most of them.

-Headbutts
-Eye gouges
-Biting
-Hair pulling
-Fishhooks
-Clawing
-Strikes to the groin
-Strikes to the back of the head
-Strikes to the spine
-Strikes to the throat
-Kicking grounded opponent
-Clothing manipulations
-Use of weapons

You will have a much better chance of walking away by adding some of these techniques to your arsenal.