Even though you’re and your sound the same, they mean two very different things.
You’re is a contraction of “you are,” as in “You’re cute” (or “You are cute”). Contractions combine two words and usually use an apostrophe (’). Contractions like you’re are very common in spoken English. Jessica uses this contraction when she says, “I love that you’re following your heart, Brian.”
Your is a possessive adjective. It describes a noun by telling us to whom it belongs, as in, “I love your new dress!” (The dress belongs to you.) Other possessive adjectives are: my, his, her, their, and our.