The best guide by which to pray is to use the Scripture.  For example consider how to pray for your family, friends, and yourself according to Philippians 1:9-11…

It is my prayer that your love may abound more and more, with knowledge and all discernment, 10 so that you may approve what is excellent, and so be pure and blameless for the day of Christ, 11 filled with the fruit of righteousness that comes through Jesus Christ, to the glory and praise of God.

Using this text, pray for others (And/our yourself) by asking God to…

Fill your loved one to overflowing with love and insight…

Enable your loved one to choose what is best in life…

Make your loved one pure and blameless…

Bear good fruit through your loved one…

Help your loved one to glorify God in all things.

That your loved one may know: The good from the bad,

The better from the good,

The best from the better.

That they are able to make wise choices under pressure.

That really covers it all doesn’t it?