How to remove everything in a string before first occurrence of pattern (Python) [duplicate]

I have a string that looks like the following:

sample_string = 'Hello, my name is Bob.\nI like sparkling water.\nMy favorite flavor is mango.\n Goodbye.'

I want to do two things:

1. Edit the string in a way that removes all characters before the first occurrence of '\n'
2. Remove all occurrences of '\n'

I've got #2 sorted out just fine:

sample_string.replace('\n','')

But, I'm not sure how to structure a regex expression to pinpoint the first \n and remove all characters before it.

The final string should look like:

final_string = 'I like sparkling water. My favorite flavor is mango. Goodbye.'