Hi,
Hmm, a ritual in your reality self defence training? You know, this may disagree with a few people, but I think it's a good idea. You just need to understand what type of ritual you need to use.
The classical Japanese martial arts utilise ritual in various ways, just watch any demo for them. Often they involve the participants approach each other from a distance, eyes and awareness firmly on their opponent, then, at a pre-ordained distance, stop, perform a ritualised bow, sometimes with a particular phrase or prayer being said, maybe a loud clap or slap at the end, then draw weapons if being used, or move closer if unarmed and adopt the starting posture, then perform the technique. At the end, move back (keeping awareness still), a final bow, then retreat.
Basically, what all this is doing is giving the practitioner the opportunity to prepare themselves for the correct mindset for combat, and allow them to practice maintaining that focus and mindset all the way to the end of the combat (and after). This comes from a duelling background amongst high-ranking and high-status warriors who would test themselves against other warriors.
But that's not the way fights and assaults happen today. Your likely attacker isn't going to walk towards you, stop, bow, and fight you on equal terms. They are going to try to attack with an advantage, whether percieved or real. This could be a weapon, a group (which you may not realise are part of the attack until too late), drugs/alcohol, or previous successful experience attacking people. However, that doesn't mean there is no ritual involved.
Let's take two common forms of street violence. In the first, you are out with friends, and someone (stranger) decides to start a fight. They may be drunk, may have had a bad day, or may have just decided that you were the one they want to hurt. It's not personal, it's just the way it is. For simplicity, let's say they're drunk, and you or part of your group may have accidentally bumped into them, spilling their drink. That is enough for them to kick off. Here comes the ritual.
The ritual here is posturing in an attempt to intimidate the opponent. Often, the aggressor will walk back and forth, yelling, and often shedding clothing (jacket, shirt etc). Then there will be a set-up (step forward to breach distance as the striking hand is cocked, or look away as setting up the strike), and the attack.
So build a ritual involving those aspects; for example, practice a ritual before your techniques where you try to talk an opponent down, keep distance, keep awareness of incoming attacks as well as other possible participants, keep moving around, then have the attack come in and perform your defence (or attack if available).
The other is a sucker-in. This is not a street fight. The attacker is not a street fighter. This is a street predator, and an ambush assault. The aim is not to fight you, the aim is simply to hurt you. A fight will leave them open to being hurt themselves, and that is not in their agenda. As a result, good awareness and simply being a "hard" target will often be enough to put the predator off. But back to the point.
There are a coupleof different approaches that may be encountered, such as "friendly" approaches, and "sleazy" approaches. Friendly appraoches try to get in close by being nice, not giving any indication of any ill-intent (examples may include "Hey, man, how are you? Haven't seen you for ages, man, come here, l me get you a drink..." while moving into range, smiling all the time. By the time they are in range, it's pretty much over.); sleazy may be making some kind of offer ("Hey, c'mere dude, wanna show ya somethin'. Nah, c'mere, it's real cool, dude, c'mon...", and when you get here, or they get cose enough to you, again, it's all over).
So your ritual here would focus on verbal de-fusing and maintaining distance. Again, that can often be enough. If the predator doesn't get their range, they won't attack unless provoked or embarrassed into it. So don't challenge them, just mirror the approach (be firm, but friendly back to the friendly guy, firm and resolute in staying back from the sleazy guy). For the ritual, though, you can include a technique at the end if you wish, but I recommend practicing the talk-down as a technique in and of itself