Here's a list of sunnah by the Prophet Muhammad pbuh. Highlighted are my favs.
Read them, understand them and hopefully, practice them. =D
Give the laborer his wage before his perspiration be dry
Do not envy one another; do not inflate prices one to another; do not turn away from one another; and do not undercut one another, but be you, oh servants of Allah, brothers.
It is better to sit alone than in company with the bad; and it is, better still to sit with the good than alone. It is better to speak to a seeker of knowledge than to remain silent; but silence is better than idle words.
When you see a person who has been given more than you in money and beauty, look to those, who have been given less.
Much silence and a good disposition, there are no two things better than these.
The best of the houses is the house where an orphan gets love and kindness.
To overcome evil with good is good, to resist evil by evil is evil.
He is not of us who is not affectionate to the little ones, and does not respect the old; and he is not of us, who does not order which is lawful, and prohibits that which is unlawful.
A Muslim who plants a tree or sows a field, from which man, birds and animals can eat, is committing an act of charity.
The most excellent Jihad is that for the conquest of self.
Say what is true, although it may be bitter and displeasing to people.
Verily, a man teaching his child manners is better than giving one bushel of grain in alms.
Who are the learned? Those who practice what they know.
Allah does not look at your appearance or your possessions; but He looks at your heart and your deeds.
When two persons are together, two of them must not whisper to each other, without letting the third hear; because it would hurt him.
Verily, it is one of the respects to Allah to honor an old man.
All Muslims are like a foundation, each strengthening the other; in such a way they do support each other.
He, who wishes to enter paradise at the best gate, must please his father and mother.
I am leaving two things among you, and if you cling to them firmly you will never go astray; one is the Book of Allah and the other is my way of life.
Allah is One and likes Unity.
The best of alms is that, which the right hand gives and the left hand knows not of.
The perfect Muslim is not a perfect Muslim, who eats till he is full and leaves his neighbors hungry.
Do you know what is better than charity and fasting and prayer? It is keeping peace and good relations between people, as quarrels and bad feelings destroy mankind.
Source - CLICK FOR LINK