Luck.....is It Fate?

Sat at work, bored,unhappy, struggling to cope with the monotony of life, wondering to myself is there such a thing as luck? Now here's my question, how can there be such a thing when apparently our lives are mapped out by fate? We're all supposedly just walking a pre-determined path, luck doesn't seem to make an appearance, or does it? Some people seem to have it all, health, wealth, happiness, success...... Is that luck or was it always going to be like that? Or is another factor playing a part? If we really want something to happen, is it true that we have to make it happen? I sit here thinking fondly of my mother in-law and her much overused saying, "everything will sort itself out in the end" - Will it? Do we really have any control over our own lives or has some greater being already made those decisions for us?