1) Most people are just telling your friend what they want to hear.
2) You're being a GOOD friend.
3) Your friends will respect you.
4) If they don't listen to your advice, and the same sh*t keeps happening over and over again, you can tell them you don't wanna hear about it anymore, your job is done.
5) Most of the time you will simply be telling them what they NEED to hear.
6) You're not being rude or pretentious in any way as long as you speak to them respectfully.
7) You will not feel or be two-faced.
8) They're asking for your opinion, so why should you lie or not say anything?
9) They will (hopefully) appreciate your way of thinking.
10) You'll see who your real friends are, because fake friends won't keep asking you for advice when what they really want is simply some attention. #SorryNotSorry but real friends aren't meant to only give compliments.