The weather in the farming season is decided, we do not have a role. This is the transitional luck.
The farmer needs to put in his best to cultivate the fields, this is the karma required from the farmer.
The harvest reaped is a result of the transitional luck and the farmer's karma and this the the ultimate Destiny.
Though most of the high level schema of the universe is by HIS design, HE has given us the golden opportunity to perform positive/negative karma which would add to the Destiny.
