Sometimes, destiny puts a great mountain in the middle of your path. Destiny can even kill you. It can also be like a very jealous and capricious woman; many of those annoying things are destiny. In general... destiny is a complete bitch. Damn the hour and whoever created destiny. But... going back to the main idea... it can do many things, create many paths, and give you many options. Of course, that can be considered the good part, right?
So, destiny can also be described as an infinity of threads that intertwine and sometimes drift apart for an eternity. But, always, always, they come back together. Sometimes it's positive, like meeting a relative, finding the love of your life, discovering great fortune, fame, money, love, people. In general, sometimes the threads of destiny aren't so bitchy.