To answer your question straightaway, it really depends on you whether you have the passion for it. If you are passionate about any of the relevant new-age technologies in the field of Data Science like data visualization, machine learning, advanced statistical tools, etc., then you have chosen the right field for yourself.
While you will need to be familiar with the following skillsets and modules, constantly upskilling is encouraged to avoid redundancy in the competition:
Big Data Hadoop
Machine Learning and AI
Multivariable Calculus & Linear Algebra
Data Visualization & Communication
Decision Trees and Random Forest
Association Rule Mining and Recommendation Engines
It is very important to work on as many personal projects that you can to be able to showcase them as part of your portfolio. You will also be expected to show your business acumen along the way as well as have good communication skills. And, I will mention this again, avoid stagnancy and always keep upskilling yourself in the latest technology!
Here is a tutorial to get you started in the field of Data Science:
If you think you are able to follow the above tutorial, you should be fine. I don’t see why you should worry about how difficult Data Science is as long as you have the passion to keep pursuing it everyday. Good Luck!