Everyone now speeds up to attend data science classes and parallelly bother about their success. A constant thought remains in their that that whether they would be good at that or not. First of all, let me explain to you that if you are right in any field, having data science, knowledge adds stars to it. It is just a language like English which gives you the path to follow your desires. People think about how much maths, how much programming language they must be good at. Let me clear you one thing that only those formulas are used which are used in your field, and if you are well confident about your domain for say example biochemical field, then, of course, you must be knowing well about it, just a thing is that this time a new to that task. So never feel so low and less confident about it.
You know just you need wings to fly.