That's not entirely true - spending time around people who are in the mode I want to be in will put me in that mode.
That effect is also why it makes people uncomfortable. If you are in your head and a person openly wants to interact with you it draws them into their head as well. Different people have different sensitivity to that.
A straightforward way to get out of your head is sports. If your heart beat is at 160 while you run a marathon, your analytical mode is likely of. There might be a few people on LW who are stable enough in their analytical mode to still have it working in that situation but most people will get kicked out.
That's a blunt way. I think that tacking up martial arts is more yielding than picking up running as a hobby. Discussing the advantages of various forms of physical activity isn't something I want to go into that this place, but if you lack physical activity, it's key.
Another that's relevant to this conversation is being connected to your emotional desire. If you have a desire to spend time with a woman, saying: "I really enjoy spending time with you. I would like to spend more time with you, are you free on Thursday?" That's nonviolent communication (NVC).
You don't ask: "Do you have a crush on me? I need that information to decide how to interact with you." You feel into your desire and put it in words to allow the other person agency. You don't hide information from them but are open. If you do that with strong emotional desires it get's you out of your head.
But don't go out and memorize that line word by word. If you memorize it word by word and say it in the mirror till you say it flawlessly you aren't in touch with your emotions in the moment. Reciting memorized lines won't get you out of your head and the emotional impact on the other person is less and as a result the changes of the other person reacting positively are lower as well.
Whether you can open with every desire will be different in different social environments. At work it might not be appropriate to voice every desire but I think it's very worthwhile to move in other circles where you can be open.
If you have a crush on someone you usually want to find out if they have one on you too. In my opinion outright asking them is often not a good solution, because if they don't have a crush on you yet it decreases the chance of this ever happening if they know you have one. This believe is based on what I read about love psychology. Hovever I don't really want to discuss the option of outright asking them in this thread, therefore I have not elaborated further how I got to this believe.
The alternative to asking them is trying to interpret signals that they might give you. However to know how many signals you need before you should believe that they are in love with you, you would need the prior. I have not been able to find anything about the prior of someone being in love with you. Therefore my Idea is to do a survey in order to find out how likely it is that a person you know has a crush on you. The plan is to ask the person taking the survey how many people they know well enough to possibly have a crush on them and how many people they actually have a crush on.
I have created a Survey for this and would be really happy if you would participate.
The next stepp would be to discuss how certain signals a person can give you raise the probability of them having a crush on you. That part is quite difficult. I think probably the best way would be to check how your friends react to certain situations and what body language they show you and then, if you find out someone has a crush on you, to look up what he did differently from people who are merely your friends. I am currently not in a good position to do this experiment but if someone wants to try or has results about this to share please do so. However I think this part is less important than finding the prior, because most people have at least a general idea about what certain signals mean from personal experience while at least I have no idea at all what the prior might be.