Jesus told them in verse 33 that they were to seek God first, give Him first place in everything and all other things they needed would be added unto them. God would meet their needs. There was no cause to worry or be afraid. Jesus was not telling them that their lives would always be problem free, because while we live on this earth we will have problems. But, he was saying to not think or dwell on what might happen tomorrow, but live day to day.
Worry accomplishes nothing whatsoever.
No temptation has seized you except what is common to man. But when you are tempted, he will also provide a way out so that you can stand up under it. We can see by this verse that there will be temptations in this life, but we are not the only ones that face them. God will not allow us to go through anymore than He knows we can bear. When He does allow us to go through something it is not meant to hurt us, it is to help make us strong.