Whenever you suppress a feeling it will eventually manifest itself magnified many times over. Beware of depression, illness or emotional outbursts as expressions of suppression. There's a difference between giving counsel, advice, direction and preaching. Preachers don't know when to stop and someone gets turned off, angry, or feels guilty. Accept and give praise when indicated.
Nothing is more motivating than a sincere compliment of one's behavior or character.
Being moody is normal and unpredictable. Don't get down on yourself or others when you have a bad day. No one is happy all the time. Healthy people tolerate their mood swings. Nothing is more devastating than loneliness.