So one reliable path to confidence is to start with small accomplishments and incrementally build on them. Most people who learn to fly, start with a small, single-engine plane and work their way up to larger, more powerful and more complex aircraft.
Experience is a great confidence builder.
Yet in order to grow, you must also be able to act with confidence in new and unfamiliar situations. Many times it is necessary to create your own confidence. Remember that confidence is nothing more than a state of mind. You can completely control your own mind through the thoughts you think and the actions you take. To be confident, act confidently.