You don't need to sit to think, but you still can dream, while you doing what you have to do to survive, and every day, every hour your dream will be closer and closer to you. Eventually, you will get what you want. The universe, God or whatever you want to call it will provide you with opportunities, just don't miss it. Only one condition: you have to feel happy while you think about changes. If you feel bad, it means you thinking about lack of it. That is bad, it actually will lead you in opposite direction. You can ask how I'm so sure in it? My answer is: My life is proof for it. I always get what I want.