Stop forecasting the future using abilities you are actively improving.

Predicting how your life will go using your current abilities builds the forecast on something that is actively changing. If you are genuinely improving, then the person who will encounter the next five years is not the person doing the forecasting, and the projection is out of date before it is finished. This is how people talk themselves out of things they would have grown into.

When you catch yourself concluding something is not for you, ask whether you are including your own development in the calculation. Usually not. Give the improving version of yourself a place in the estimate.