You increase your elemental force (Willpower, Insight, Resilience, Lucidity, and DreamSoul) by gaining Orbits. With every Orbit gained, you gain one point in at least one element. Your focus element will advance faster than the others.
Dreamers advance in Orbit by gaining Experience Points (XP). Dreamers gain XP in many ways. For more detail, see the Dreamer's Manual. Every tenth Orbit is known as a Sphere. You do not automatically attain a Sphere just because you have enough XP. You must seek out a Teacher powerful enough to Ascend you to the Sphere you are ready for, and fulfill the requests by that Teacher to qualify for Ascension. These include missions, quests, duties or other requests. For more detail on quests and the role of a Teacher, see the Teacher's Manual.