I see what Marcus was getting at in the philosophical sense & it's very true in the abstract. However, there are indisputable & objective facts that can be agreed upon by multiple observers who are being truthful. Their opinions & perspectives on those objective facts will differ, however. That is true.
Decide what is right for you before you decide what is possible. Create your ideal life in every detail. Don’t be concerned about the process of getting from where you are to where you want to go. For now, just focus on positive thinking and creating a vision of your perfect future.