"如果你谈论它，那是一个梦想。如果你设想它，那是可能的。但如果你把它安排在日程上，那就是真实的。"

Simplified Meaning:

When we just talk about doing something, it's like imagining or dreaming about it, but it doesn't actually happen. Once we start to picture it in our mind, it starts to seem more possible, as if we could actually achieve it. However, it's only when we plan a specific time to do it that it becomes real and we can start working on it. For example, a person might dream about taking a big trip to another country. If they start planning where they'd go and what they'd do, the trip starts to feel possible. But it's when they book their flights and make a travel schedule that the trip becomes something that will really happen. By setting a date and time, dreams turn into actual, actionable plans. This advice encourages us to move from dreaming and planning to actually setting solid steps to achieve our goals.