say what you need to say

Marriage counseling starts earlier than expected.
Giving relationship advice to people is interesting. 
I really feel like I lack in giving good advice a lot of the time. 
It comes from being an emotional, sensitive girl myself, who struggles and has struggled with a lot of the same issues that these everyone goes through.
How can I give good advice when I would act the same in the situation?
It's more about being an outside ear:
someone to say the things everyone else is thinking without realizing it, and pointing out patterns to be aware of in the future. And it's also about simply asking the right questions. Getting them talking. Letting them think out loud and admit things honestly and vulnerably.
Tip #1:
Journal. A lot. And be completely honest within your journal. Don't try to butter it up or add fluff or be elusive or nice or anything in fear of someone else reading it or sounding juvenile and making fun of yourself later. I've done that too much and it doesn't help anything. No one's going to steal your journal. And your future self will actually thank you for admiting the beginning signs of a failing relationship, revealing the way you truly felt at the time, and leading you to a clearer understanding of where things went wrong. 
Emotions are important and we're living in a culture where it is inappropriate to be honest with yourself. Feel what you feel. And when you're done feeling it, feel something else.