Ask for their advice.
If it's good, put it into practice and show them the results.
Remember though, advice from someone may also be them trying to live their life through you. It's okay not to take it. Thank them anyway, most of the time it's with the best of intentions.
But if you do put it into practice and it works, follow up. The follow up is often a forgotten step. I write these posts to remind myself of these things.
You told someone to try doing X.
They went and did X and it worked for them.
And then they came back and told you they did X and said 'thank you for telling me X.'
How would you feel?
The next time they decided to take on a challenge, you'd be on their side.