What does Jonathan say we must do with everything that limits us?

The central message behind Richard Bach's Jonathan Livingston Seagull lies in the celebration of individualism and self-worth. In his desire to fly higher and faster, Jonathan escapes from the standards and expectations set on him by his parents and his flock. He understands growth only comes when one refuses to accept limitations defined by those around us. It is not until he seeks out this knowledge on his own that he realizes limitations defined by those around us are the limitations which keep us from growing and becoming stronger.
Therefore, according to Jonathan, one must ignore the restrictive things which limit us. By doing so, Jonathan is able to fly higher and faster, eventually learning from Chiang the "perfect speed."
As an individual, Jonathan realizes that the things which limit us keep us rooted to societal expectations. Once he achieves the knowledge of flight, he is able to teach others about it. This allows others around him to experience the importance of individuality and refusing limitations defined by society.

One of the book's central messages is that we must put aside everything that limits us. That's certainly what Jonathan himself does. His parents can't understand why he doesn't want to be like the other seagulls, why he wants to fly low like the pelicans and the albatrosses. But Jonathan's different; he's an individual and so yearns to challenge the limits placed upon him both by nature and by convention. He wants to find out just what he's capable of; and he won't know that until he tests himself. By flying high above the common flock, wherever and whenever he wants, swooping and soaring to his heart's content, Jonathan is attempting to discover the boundaries of his limitations and explore them freely.