In today's Gospel reading at Mass from Luke 9, Jesus told his disciples that he must suffer greatly, be rejected by the elders, the chief priests, and the scribes, and be killed and on the third day be raised.
Then he said to all, "If anyone wishes to come after me, he must deny himself and take up his cross daily and follow me. For whoever wishes to save his life will lose it, but whoever loses his life for my sake will save it. What profit is there for one to gain the whole world yet lose or forfeit himself?" These three verses provide our complete guide to living. To summarize: Forget about saving your own life ~ follow him and you will not lose it. This is the whole truth in a nutshell.
Jesus' teaching has been consistent throughout. He came and showed us how much God loves us. He opened the door to light, hope, and all we need to know for our salvation. If all this is not good enough for you, then... (I'll let you draw your own conclusion).