Instead of taking a plunge take small steps towards betterment. First, understand your anxiety and remove them, then decide the first step and break it further, do one thing at a time which will lead you towards another. Like if you do not like a person, write good things about him every day and you will find your feelings changing.
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People who try to invade your space are not thinking about your feelings but are thinking of their needs from you. The boundaries that people try to cross can be verbal, psychological, emotional, physical, ethical, spiritual and moral with you. You have to understand your inner world by becoming comfortable with your own beliefs, emotions, feelings and ideas. By setting boundaries you are telling people how you want and expect to be treated. Respect your own self, stay away from people who have their own agenda, be in charge of your choices and separate yourself from others.
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Fear is good if it is keeping you safe but can be limiting thing. Sometimes a moment of bravery is needed to make life better. By getting out of your comfort zone you become more comfortable in areas like public speaking, giving negative feedback, socializing that gives you jitters. By pushing yourself a little to do something new, something unknown you can be the kind of person who succeeds despite their fears.
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