Aquarius, It's unfortunate, but you seem to have built a reputation for being difficult to be around. You can admit to yourself that your interactions with people are often fraught with tension, and that you appear guarded right away. This has grown out of experience: people who didn't have your best interests at heart, and who intended to manipulate you or use you for their own ends.
That may have been true in the past, and it's understandable that you harbor a fear of being mistreated again. But you have to realise that not everyone is like the people who misused your trust and exploited your relationship with them. Many people you thought you could trust turned out to have failed you. Still, you cannot keep carrying the same mindset into every new situation: your new office, outings, and meetings with new people in new places, or whenever you're introduced to someone new.
This behavior is unacceptable because it only leads to solitude and to resentment and anger at the world simmering inside you, slowly eating away at you. Take a deep breath and understand that people are not the same everywhere. The more you deny yourself that happiness, the more you miss out on amazing shared experiences and learning from others. This behavior is a detriment to your social life. There is goodness, kindness, and love in the world, and you have just as much right to that level of care as everyone else.
Aquarius Horoscope Today Tip: Work on understanding people better, and lower your guard enough to let some goodness into your life.