A successful career in High Energy Physics (HEP) is influenced by one's mentality, particularly regarding the belief in innate versus learned abilities. Research indicates that individuals who view academic skills as learned tend to perform better, as they are more likely to challenge themselves and learn from mistakes. In contrast, those who believe abilities are innate often opt for easier tasks and may struggle to complete their degrees. Collaboration and a supportive working environment are crucial for success in academia, as isolation can hinder growth and achievement. Concerns about personal capability, such as fears of not meeting intellectual standards for HEP-Theory, are common. However, adopting a growth mindset—believing in the potential for skill development—can enhance resilience and motivation. Ultimately, if doubts about one's fit in the field persist, it may be worth reconsidering the choice of career path.