Do you see the sign?

Lk 11:29 And while the crowds were thickly gathered together, He began to say, " This is an evil generation. It seeks a sign, and no sign will be given to it except the sign of Jonah the prophet.
:30 For as Jonah became a sign to the Ninevites, so also the Son of Man will be to this generation.
:31 The queen of the South will rise up in the judgment with the men of this generation and condemn them, for she came from the ends of the earth to hear the wisdom of Solomon; and indeed a greater than Solomon is here.
:32 The men of Nineveh will rise up in the judgment with this generation and condemn it, for they repented at the preaching of Jonah; and indeed a greater than Jonah is here.
:33 No one, when he has lit a lamp, puts it in a secret place or under a basket, but on a lampstand, thjat those who come in may see the light.
:34 The lamp of the body is the eye. Therefore, when your eye is good, your whole body is full of light. But when your eye is bad, your body also is full of darkness.
:35 Therefore take heed that the light which is in you is not darkness.
:36 If then your whole body is full of light, having no part dark, the whole body will be full of light, as when the bright shining of a lamp gives you light.
:37 And as He spoke, a certain Pharisee asked Him to dine with Him. So He went in and sat down to eat.
:38 When the Pharisee saw it, he marveled that He had not first washed before dinner.
:39 Then the Lord said to him, "Now you Pharisees make the outside of the cup and dish clean, but your inward part is full of greed and wickedness.
:40 Foolish ones! Did not He who made the outside make the inside also?
:41 But rather give alms of such things as you have; then indeed all things are clean to you.
:42 But woe to you Pharisees! For you tithe mint and rue and all manner of herbs, and pass by justice and the love of God. These you ought to have done without leaving the others undone.
:43 Woe to you Pharisees! For you love the best seats in the synagogues and greetings in the marketplaces.
:44 Woe to you, scribes and Pharisses, hypocrites! For you are like graves which are not seen, and the men who walk on them are not aware of them."
:45 Then one of the lawyers answered and said to Him, "Teacher, by saying these things You reproach us also."

 
When life is going well, we tend to ignore warnings that we need to turn around and change our sinful ways. It's important to remember that we may be wrong even though life is good.
God sends warnings to protect us not to punish us.
Jn 15:12 This is My commandment, that you love one another as I have loved you.