Is it a good idea to always follow your passion?

Thank you Arshad for your question, it helped me discover Cal Newport’s approach that I personally find to be reasonable and fact-based. But, taken into account today’s competitive market, I would tell you this:
If you are very good at what you are passionate about, take risks and be the best one doing it. See, we can be passionate about a lot of things and yet, we might lack the intellectual competencies to make it our job. Need an example? My sister is passionate about astronomy and everything that’s related to it but she hates physics, and we both doubt she’s ever going to make it her career. On the other hand, you find people that are very good at what they’re passionate about, like Michael Dell whose passion has always been technology. In pursuit of it, he dropped out of college to start up a company that, after 30 years of age, is literally shaping the future.
Bottom of line, unless you’re good at it, no need to take risks. But as we’re not robots but human beings, you should try to find passion in what you will be doing, it empowers you to give the best of you.

It is always good to follow your passion, with that being said, always have a back up plan.  You never know what curve balls life brings you, so it is good to plan ahead.  Also, it is important not to confuse a passion for doing something with a hobby.  Growing up, I loved playing basketball.  I played at a very high level and worked hard to achieve a goal of playing professionally everyday.  Things did not workout for me, but I was smart in not allowing that passion to blind my self reflection and realizing when it was time to do something else with my life.

Yes, you should follow your passion because that will be the driving point for you to go and achieve your goals. I do believe you should be flexible in what you deem your dream job is. I believe that if you find that your passion is not as profitable as you would hope, maybe consider what talents you can combine that would allow you to do what you love, and still be able to sustain yourself. For instance, if you are passionate about being a musician and you find it's hard to get gigs you could find out what communities and demographics are searching for musicians. Maybe volunteer at a retirement home, consider teaching, look into jingle writing.

In the end, it's proven that when you love something you do your best work when your doing it. Follow your passion and be open to all possible ways and combinations that will allow you to do what you love while still sustaining yourself financially.

I believe it is. If you have true passion behind what you are doing/selling then you a can really succeed in role. My first job out of college wasn't my dream job but I was passionate about the company and knew the entry position could lead to other departments.