Human being is product of his / her habits. Habits are formed by actions. Actions are triggered by words. Words are manifestation of one’s thought. Thought are consciously or unconsciously modified by its surrounding. Thus, surround yourself with great things is a good start to form your own self.

Read great books.
Watch awesome stuffs.
Do great things.
Say great things.
Work on remarkable projects.
Surround yourself with great people.

Yes it requires cost in tangible and intangible way. But the future you will thank the present you later.