Is there a systematic way to overcome the fear of teasing and humiliation?

Psychotherapy: With a good psychotherapist, you can develop healthy love for -- and confidence in -- yourself. With this, you'll be better able to sustain yourself despite others' possibly unpleasant attitudes. You might not like it, but you won't have to fear it. And you might decide to end relationships with people who treat you that way. You'll also be able to connect with healthier, more loving people!

Fear humiliation: This is a great question. The study of humiliation, anger, shame and bullying and the role of all of of our emotions in life in general has made great strides in the last 10 years. Talk to a professional should always help. We talk a lot about these issues at this site: http://www.Facebook.Com/groups/120156811367884/ affect psychology.

Desensitization: Start regularly socializing with small, and i mean small groups of people you know personally in a variety of social situations, and slowly increase the number of friends. Then, slowly have your friends invite people you may not know personally, just one or two to start with, and increase the numbers of known and unknown people over time. Should the anxiety spike, stick with smaller mixed groups