Our mind is constantly thinking about our future life journey with hopes and expectations and goals. Future is just a thought . We have no control over it and we don’t know what God has planned for us in future. We are anxious not because we think about the future but because we are not comfortable with what we are seeing in future. This sets up anxiety because we want to alter what we are not comfortable with in future , not accepting that future is a just thought in mind having no connection with what is going to happen. Don’t split your hairs over trying to control future which is as yet uncharted territory and be in the present enjoying life to the fullest not thinking about past which has already happened and not thinking about future which is unknown.Often, things turn out much better than we thought.
Some people are always negative in life 
Certain things will never go back to how they used to be 
Everyone has a chapter they don’t read out loud 
When you are feeding your mind with harmful thoughts