Christians call it fate while Buddhists call it karma.
Christians’ main goal is called salvation while Buddhists’ is called nirvana.

And no, these are not exactly the same thing.
Not different enough to separate them easily, not similar enough to consider them the same thing.

Fate depends on what God has in mind for you while karma depends exclusively on what you have decided all along your life.

Salvation is even more complicated.
Catholics believe that each individual can obtain it, regardless of what they had done until that moment, by simply acknowledging ones sins and by repenting before God/priest. Protestants, on the other hand, believe that individual salvation is entirely at God’s mercy. Mortal individuals can do nothing more than putting their faith in God’s all encompassing love and waiting for it.
Meanwhile, since Buddhists don’t have a God, they believe that accomplishing nirvana is the responsibility of each individual… All somebody has to do in order to achieve this goal is to transform their inner self. There is no outside, objective (?!?) benchmark to be reached here… no other arbiter to please…

Yet fate and karma are not that different either… Life experience in Asia may be different from that in Europe but the differences aren’t huge enough to consider them two different things. Not to mention the growing number of Buddhists living in the Euro-Atlantic region and the burgeoning number of Christian converts in Asia….

As for salvation versus nirvana… the man made Catholic one is almost similar – even if a lot easier to obtain, to the Buddhist nirvana while the Protestant one is just as dis-similar from it’s Catholic equivalent as it is from the Buddhist nirvana.
Yet, again, is it really possible for peace of mind to be that different on the opposing ends of EurAsia? Peace of mind experienced by very similar human individuals…. The only difference between them being the culture they have grown into….

Which brings us to chance.

Rationally minded people – scientists, economists, etc., are convinced that any decision can be perfect… If  only people were diligent enough to educate themselves properly, to think with their brains instead of allowing their hearts to take over…

‘Rationally minded people…’
But how rational is to expect a human being – an animal, first and foremost, to behave in a perfectly rational manner?
How rational is to expect a human being to overcome all emotion AND all biases? Known and unknown….
How rational is even to expect a human being to ‘diligently’ research all available data before making a decision? How much time would that take? When should someone be satisfied enough with the information gathered about a particular subject?

How much is each of us indebted to Lady Luck about the place we’ve born into?
Christian Europe or Buddhist Asia?
About the time of our birth? Before any of Christ/Buddha had preached or after?
How much is each of us indebted to Lady Luck about the amount of opportunity each of us have had to decide about during our lives?

My last question was a tricky one, indeed.
OK, Lady Luck is responsible for many things. For the place and time of our birth. For the fortunes of the families we’ve been born into and for the mental and physical each of us enjoys. Or lacks…

Only we do share in the final responsibility for our fate/salvation/karma/nirvana!

Our decisions are equally shaped by the circumstances in which we’ve reached those decisions AND by our diligence in making them.
Each of our decisions opens up some new doors and shuts down others. Or, at least, turns our heads towards new openings and away from others.

‘And your point is?’

Don’t blame others for your bad decisions and don’t praise yourself too much for your good ones.
Don’t blame others for their bad decisions. Are you sure they had a real alternative for the situations you found them in? Mind you, not whether there was a real alternative! Did THEY had access to that alternative?
Extend a helping hand. You’re not responsible for saving everybody else but to see somebody in need and not offer your help sets the stage for you needing help and everybody else passing by without noticing you.
Don’t overdo it. When you see someone drowning, get them out to safety. That’s enough. Don’t lecture them about the dangers of getting into water. Firstly, you don’t know how they got in and, secondly, if they are not able to figure this out by themselves you’re wasting your time.
Don’t prevent everybody else from getting in simply because somebody had (nearly) drowned. You’re not God. You don’t know everything. You just happened to be there when somebody was drowning and you was strong and brave enough enough to save them. That’s all there is to it.