People use this to describe their daily struggles, in particular in regards to overcoming financial difficulties. When you are "en la lucha" life is difficult, and you are fighting to win.
Lukchan is a person who wants everyone to be happy. So, if someone you know, or don't know is feeling sad, go ahead and make them happy. Or say: "JUST LUKCHAN IT!"
Lochana is a beautiful lady with beautiful heart and mesmerising eyes. She is amazing inside out. She is like water which can fit into any circumstances or situation.