If you don’t feel you deserve a bright future - or a great relationship - or to achieve your goals - you won’t. It’s the perfect breeding ground for addictions when you think negatively. If there is no future then who cares about the present.. etc.
The future - what do you look like? who are you with? where are you? where have you been? what are you doing? what have you done? do you have family? are you married? are you on a boat? are you in europe? what have you created? where are you living? who is in your life? what kind of a person are you? how are you helping the people around you? do you have children? do you have animals? where do you vacation? what do you eat? what skills do you have? how do people who are close to you feel about you? are you living at your full potential? are you still indulging your imagination? who is the person you are in a relationship with? What qualities do they have? are you a good lover? can people come to you with their problems? etc.
If you think of your future self as someone you will be - you start to act as if you are that person - eventually that is what you are.
When I’m trying to push myself I feel very uncomfortable. When I’m trying to change and do something better I always feel off kilter. If you are trying to get somewhere great many of the steps that lead you there are terrifying, disappointing, and you doubt if you are good enough to be even trying, or if you have anything great to share with the world, or who cares?, or hasn’t everything been done already, etc. but I just try to shut those voices out and keep focused on my vision of the future.
Never stop creating because you feel everything has already ‘been done’. There has never been another you. It is your unique point of view.