reducing self consciousness is one of the major aspect of sa, it can not be achieved quickly because it is a symptom of a deep seated belief that we are somehow different or weird or someway less good than others, it is a distorted and unrealistic belief, no body is perfect, one can always find a lot of imperfections/deficits in anyone if one looks critically enough. keeping all this in mind you need to achieve a position where you are able to accept yourself unconditionally including any imperfections, you need to believe that you are as good as anyone else at the same time recognizing any perceived faults and taking responsibility for them and actively addressing them, this will give you enough confidence.
other most important thing is keeping a rational perspective, sometimes for example a botched small talk with an attractive person can devastate us with severe anxiety/rumination/stuck but if we distance our self emotionally and look rationally upon that event it will not look that terrible, after all there is no guarantee that confident people don't face rejections, in fact confident people are the most persistent people thats what makes them confident, you can ask a few confident people and find out yourself. this is a thumb rule, every time you feel stuck, try to think about how would a confident person deal with it, would they drown in to the oceon of ANTS?
i have typed all the above only to answer this question.
1- Accept your self, unconditionally, self acceptance is not simply a rationalization in response to an ant but it is a very powerful philosophy, more u accept ur self less and less self conscious you will feel not only that but it will affect all the aspects of your life, career, relationship, family, all
2- Relax, try to make casual and normal eye contact, dont stare. Keep an assertive but friendly gesture. Dont look on the ground, look at them for 3 seconds and then look on the sides, then come back. Why do we need to look at people when talking to them? what are we looking for when making eye contact? we want to know what they think and feel about the things we just expressed, so look for that and only that, no conjectures no mind reading.
3- keep your face normal, if the face is tense or frozen it will create a similar response from the other person, which will create a self perpetuating cycle of awkwardness. smile and laugh when necessary may be even frown if necessary but express your self to the other person
4- Start and end conversations at your discretion, remember the success or the failure of any conversation or relationship can never be the fault of a single party, both party share the responsibility, although the ratio may vary.
According to the clark and wells model of sa, self consciousness is the central pillar of sa, negative thinking, safety behaviors and low self confidence being the other three. Overcoming self consciousness is roughly equivalent to overcoming social anxiety, remember there are no quick fixes, if the above cognitive and behavioral exercises are done regularly you can certainly osa, even medication cant work alone, because medication can not change the deep seated negative thinking patterns and dysfunctional beliefs, medication can only make you calm by reducing your anxiety and depression giving u a chance to work on ur mind, also there remains the risk of dependence and withdrawal which can create a new challenge, complicating things further.