There are some constants to our generational existence; reacting, eating, sleeping, mating, and migrating. People migrate to different parts of the world all the time, for various reasons. While migration can help solve most of the problems you may be facing, it creates new problems. Problems that will need you at your all time best to be solved.
Firstly, you will need to understand and acknowledge racism for what it is. You'll need to build networks from scratch because you don't have childhood friends and family around anymore. You'll need to build trust because nobody really knows what you're about. And above all, you'll need make effort to bridge cultural differences because you probably don't know enough about your new home. These are problems unique to immigrants.
To address these problems, you really don't need to totally change who you are, all you need is some refactoring - some tweaking. You'll need to learn about the people you want to build trust with, learn how they've gotten to where they are, learn how to help them improve, and learn not to forget where you're from. Because by remembering your roots, you improve your trust foundation.
What makes one country better than the next are the people. They make conscious efforts to ensure that they don't worry too much about electricity, security, accessibility, healthcare, and general comfort.
You on the other hand, have been conditioned for decades, to worry about people that might try to break into your home, so you live in homes that have barb-wired 8ft cement block fences with large gates to keep thieves out.
You've been conditioned to go days without electricity, so you occupy your everyday thoughts with where and when you can charge your phone, the condition of the food in your freezer, the amount of fuel in your two generators that end up polluting the environment with noise and CO2, that make you worry about the quality of your health.
You've been conditioned to accept mediocre as the norm, thereby accepting bad infrastructure, and hailing what should otherwise be the bare minimum, considering the amount of money in the system.
These conditions take a toll on your thought process, but you don't know how deep it has eaten into your subconscious, until you get to not worry about power ever going out(unless in very bad weather conditions, or by accident).
You don't know how deep it has eaten into you, until you don't have to worry about police checkpoints and massive potholes at every kilometer(or less) on the highway and city streets.
You don't know how deep it has eaten into you, until you can execute a plan to spend 2hrs in 3 different places that are 200+km apart, all in one day, and still have time for a good rest at home before going to bed.
These are few of the things that make life a little easier than what the average Nigerian experiences. By relocating you get the chance to live a little better than you're used to, which should in turn, bring out the part of you that you don't think you would ever be.
I used to know a Nigerian that roamed the streets pretty much aimlessly. Come summer or winter, he walked around asking for "change". We worked with the same company some years back, but I don't know his status at the moment(that's if he's still here). I don't know where or how he went wrong, but to me, he is evidence that even when you relocate, things can still go wrong. If you slip, you will most likely fall.
Just like the saying "to whom much is given, much is expected", this new you is given the responsibility of positively impacting your new environment - the same environment that has helped build you. So if you have the resources to relocate to any part of the world, go for it. And make efforts towards preserving the culture of your destination.
Chances are that there's something good you've learnt about your destination country, and you're relocating also because there are some unfortunate things that you no longer want to keep contributing to. It will be quite ignorant to think we don't contribute in one way or the other, to the living conditions we're moving away from. Therefore, we should strive to identify that part of us and leave it behind. Bring the progressive side of you, and learn to build just like the people of the new home you want to move to so badly.
Migration has always been part of humanity, and no one can stop it, even if they tried. We move to other countries in search of better opportunities, and more often than not, we find these opportunities. My humble message is, as you relocate, relocate with a more open mind, and try not to be afraid to shine.