I think there is a big difference. You can go against your traits, but it will take effort. That is, it will feel like work, not fun.
Many people are good at their job while not particularly enjoying it, they like the money, status, recognition, etc... they learned the skills to make it easy for them, but the job itself is just a mean to an end. This is like these programmers who may be skilled, but during their time off, they won't do so much as touching a computer.
This is the idea behind a "social introvert", they socialize for the benefits of socializing, like for their career, or simply maintaining friendships, because even introverts want friends. They can be good at it, they can do it with little effort, but they don't enjoy it. Extroverts will socialize just for the sake of it, even if it is detrimental, as in partying all night when there is work to do.
Same idea for all the other traits, you can go against your personality, but it will cost you. Do it too much, and you will burn out. That's why I think you should be honest with yourself. For example, if you are low on openness, it is good reading on opposing viewpoints, it may help you understand customer needs at work, hold more interesting conversations, etc... so it is worth the effort. However, it doesn't mean you should force yourself to spend a week in a hippie festival if you can't stand drugs just because you pretend you are open. Actually open people will not force themselves to go, in fact, they are more likely to force themselves to be reasonable and not go.
Many people are good at their job while not particularly enjoying it, they like the money, status, recognition, etc... they learned the skills to make it easy for them, but the job itself is just a mean to an end. This is like these programmers who may be skilled, but during their time off, they won't do so much as touching a computer.
This is the idea behind a "social introvert", they socialize for the benefits of socializing, like for their career, or simply maintaining friendships, because even introverts want friends. They can be good at it, they can do it with little effort, but they don't enjoy it. Extroverts will socialize just for the sake of it, even if it is detrimental, as in partying all night when there is work to do.
Same idea for all the other traits, you can go against your personality, but it will cost you. Do it too much, and you will burn out. That's why I think you should be honest with yourself. For example, if you are low on openness, it is good reading on opposing viewpoints, it may help you understand customer needs at work, hold more interesting conversations, etc... so it is worth the effort. However, it doesn't mean you should force yourself to spend a week in a hippie festival if you can't stand drugs just because you pretend you are open. Actually open people will not force themselves to go, in fact, they are more likely to force themselves to be reasonable and not go.