Is it correct to say that introverts are reserved by nature? Would it also be correct to say that extroverts are outgoing by nature?
I would also say they tend to be, but not necessarily for introversion and extraversion concerns where one receives one's energy or where one focuses his energy, and that is not perfectly correlated with how reserved or outgoing one is. However, Keirsey's Temperament theory claims that introversion and extraversion is a farce and what really is being referred to is gregariousness (which is what you refer to) and that this isn't necessarily stagnant. Most people I present this to disagree with this viewpoint. However, I tend to be tolerant both of social interaction and of isolation, though both are difficult for me if taken to extremes, so I can see why one would be convinced that introversion and extraversion is an illusion.
I am also wondering how others who are reserved deal with it, and how it affects the process of making friends and letting others get to know you better. Do you consider being reserved the same thing as being guarded and suspicious of others?
I might be considered by some as a "public person" considering I am pretty trusting of most people in my community and am okay with a rather high level of self-disclosure. When I was more reserved, however, it was more because I worried about being embarrassed rather than because I was suspicious. In fact, once I realized people really weren't paying that much attention to me (and embarrassment isn't a big deal) I became MUCH less reserved rather quickly.
Finally, what do you do to meet others?
Well, I live on a college campus, so I just talk to people in my classes, find organizations where people share some of my interests and talk to them, or just seek out any interesting individual who happened to contact me at one point or another. People around here are quite friendly (the South) so I usually just reciprocate and that's all that's required. I may not necessarily be reserved, but I still don't initiate much.