I believe everyone can be an entrepreneur. Just that not everyone’s personal circumstance are conducive for them to take entrepreneurship as a career option at all times. Sometimes, personal situations, including financial, physical, emotional, may need the person to be in a job. And that’s perfectly OK too.
Often career professionals switch to become entrepreneurs. And that’s OK too.
My view is that ANYONE can be an entrepreneur at anytime they feel they are ready. That desire to be an entrepreneur is heightened when they stare at an opportunity in an area they are passionate about. Most people however give up that opportunity… and do not take the plunge into entrepreneurship even if the opportunity is staring at them. And often that’s because they are not sure if they are ready for entrepreneurship. The fear is about failure. But the cause of that fear is often that they are not certain that they understand enough about different aspects of business to be successful. (Professionals usually have more of this fear than say student entrepreneurs. Perhaps because professionals may have experienced the complexities of business, which students may not have had an opportunity to.).
My advice therefore is that it is good to educate yourself about and experience different aspects of business. It is good to ‘prepare’ yourself for running a business if such an opportunity presents itself. Even if you do not want to start something of your own, an entrepreneurial mindset and orientation and understanding of business as a whole will be a great asset even in your job. Whatever that job may be.
An entrepreneurial journey will have failures on its way. And that’s OK. If you do not fail in the beginning of the journey, you will face challenges at some other stage of the entrepreneurial journey. There is no reason to fear failure or challenges. You just have to be well-prepared to estimate the challenges and to deal with them as and when they happen.
thehubforstartups.com 
And most importantly the (fear & risk) is so damn inversely proportional to the entrepreneurial journey…..the first is the toughest to start and after which it somehow magically gets easier along the way I guess (well wishful thinking for now……at least for me!) So really serial entrepreneurs have that one secret ingredient which makes a HUGE difference or shall we say, ALL the difference —-> (More start-ups in your bag = Lesser is that uncertainty & fear)
Anyways Good Luck to all the entrepreneurs out there…..