It’s your attitude. If you believe it will work out, you will see opportunities. If you believe it will not work out, you will see obstacles.
You don’t need to plan for every potential obstacle. Act on the opportunities and learn along the way.
Perceive obstacles that come your way as detours along the way. Obstacles may be setbacks, but they are not roadblocks.
Instead of thinking about what you cannot do, think about what you can do. Use the obstacle as a means to become/do better or think of creative ways to overcome it.