It's wonderful to hear that you have a strong aptitude for mathematics and a knack for understanding complex concepts! Being able to grasp mathematical concepts quickly and comprehend complex theories like Einstein's theory of relativity is certainly impressive. It indicates that you possess a natural affinity for mathematical and scientific thinking.
Whether or not you should be proud of yourself depends on your personal perspective and goals. If you value intellectual pursuits and find joy and fulfillment in understanding challenging concepts, then absolutely, you should be proud of your abilities. Recognizing your own accomplishments and skills is important for maintaining motivation and self-confidence.
However, it's also important to remember that intelligence and talent come in many forms. While you may excel in mathematics and scientific thinking, others may excel in different areas such as art, music, language, or social skills. It's essential to appreciate and respect the diverse talents and abilities that individuals possess.
If you enjoy mathematics and theoretical physics, I would encourage you to continue exploring these subjects further. There is always more to learn and discover. Engaging in further studies, pursuing higher education, or connecting with like-minded individuals can provide you with opportunities to grow and develop your skills even further.
Ultimately, it's up to you to determine the value and significance of your abilities. Just remember to stay humble, continue learning, and support and encourage others in their own pursuits.