Fundraising dinners

Q: Many Muslim organisations have fundraising dinners. The people attending these dinners pay a fee e.g. R300 per person. The names of all the attendees are entered into a draw. After enjoying the dinner, the names are drawn, and the winners of the draw are given prizes e.g. umrah ticket, etc. Is this permissible?

Leaving out things that do not concern one

Q: I listen to your audios. I didn't understand one thing. You said "why should you take someone's misery? If he wants to be miserable let him die with his misery. Your heart is not a dumpyard, it is the place where the noor of Allah descends". It was something like that. What do you actually mean? I have a friend who shares her misery with me, (she is married to someone who she started to dislike but likes someone else who is getting married and many other things) I really don't know how to react and how to help her. Should I stop listening to her? Is that what you meant to say?

What is the key to keep one's heart clean?