The key is to keep asking, keep probing, keep drilling down. If you activate your natural curiosity, every answer you get may generate new questions, and then new answers, followed by more questions, and so on, in an ever-rising ladder of understanding.
[Responding to the Bishop of Oxford, Samuel Wilberforce's question whether he traced his descent from an ape on his mother's or his father's side] A man has no reason to be ashamed of having an ape for his grandfather. If there were an ancestor whom I should feel shame in recalling it would rather be a man—a man of restless and versatile intellect—who … plunges into scientific questions with which he has no real acquaintance, only to obscure them by an aimless rhetoric, and distract the attention of his hearers from the real point at issue by eloquent digressions and skilled appeals to religious prejudice.
Since 1849 I have studied incessantly, under all its aspects, a question which was already in my mind since 1832. I confess that my scheme is still a mere dream, and I do not shut my eyes to the fact that so long as I alone believe it to be possible, it is virtually impossible. ... The scheme in question is the cutting of a canal through the Isthmus of Suez. This has been thought of from the earliest historical times, and for that very reason is looked upon as impracticable. Geographical dictionaries inform us indeed that the project would have been executed long ago but for insurmountable obstacles. [On his inspiration for the Suez Canal.]
In the West, people learn through the Socratic tradition. The education system was influenced by Western philosophy and is based on constantly questioning the knowledge that’s handed to you and arriving at the truth through that process of questioning. The Indian system took off from the Guru-Shishyha tradition in which your virtue as a student lay in taking tradition or parampara as it is given to you and passing it on to the next generation in the exact same way.
Just please understand that everyone is going through a rough time as well. Even if they are hiding behind money or a simple smile. We are all continuously stumbling as we go about our lives. If we had perfect lives we'd all be perfect people. Only thing we can learn to do is endure or we will not be happy and happiness is the closest thing to perfect.
Once you start questioning your beliefs, that's when it's all over. It is truly doubt that kills our conviction.