No one may pressure you into a state of unity. It may only be felt by conscious choice. This choice includes both mental and emotional sides.

The mental choice calls for choosing to view the world through the lens of interconnection, to see yourself as piece of a greater body, and to assume the new level of responsibility that develops from that position. The emotional option is to by choice tune in to this ever-present connection and to feel it as joy.
In order to really master unity, both the mental and the emotional sides have to be integrated. You have to realize the truth of unity, as well as feel your loving connection to other people.

If you only have the mental side, you'll comprehend and agree with the logic of unity, but you won't truly get it intuitively. You'll lack the push to turn your realizations into direct actions.
If you only bear the emotional side, you'll intuitively feel that we're all connected at some level, but you'll lack a reasonable reality to understand it.

You'll feel united and joyous at times, but you'll have a difficult time mixing that into all parts of your life.
When building up a sense of unity, it's helpful to start by centering on either the mental or the emotional side, depending upon whether you prefer your system of logic or intuition.

Begin with whichever one you choose, and then utilize your progress as a way to research the other side. You may even shift back and forth in order to advance both views.

Here are a few specific exercises you can utilize to formulate and expand your experience of unity. A few of these deal with the mental side, while others center on the emotional side.