Many people think that living for themselves, doing their own thing, getting their way is the goal of life. However, after they try this for a while, they feel empty. At first, they think that the cause of their emptiness is failing to get their own way in everything. So they try to do their own thing even more, but this makes matters even worse. Finally, they begin to suspect that the constant, self-centering brainwashing they've received over the years was a big lie. Then these people hear about or remember when they heard about Jesus, the cross, dying to self (Lk 9:23), and following Jesus. Could it be that Jesus crucified is the Truth, the Way to happiness, and the Meaning of life? (see Jn 14:6)
Mary Magdalene found out that there's no such thing as doing your own thing. When she thought she was doing her own thing, she was being manipulated and enslaved into doing the devil's things. She was possessed by seven devils (Lk 8:2). Finally, she met Jesus and decided to do His thing — even if it meant weeping at the foot of His cross (Jn 19:25) and at His grave (Jn 20:11). Then she discovered the meaning of life. She met Jesus, Who is Life (Jn 14:6), when He rose from the dead.