You should discover your vocation and try to recognize the will of God. If you accept that you are a servant who needs to follow the example of Jesus Christ, you will be peaceful and happy. Even if troubles come, you will not give up. If you encounter difficulties, you will go through keeping faith. Although you fall down and commit sin, you will not stop looking for holiness.
Obviously, you could not be such a hero, without the divine grace. But with the gift of the Holy Spirit, you become perfect and complete. If you don't know what decision to make, ask for wisdom. If you are afraid, pray to God in order to grow stronger. If you lack joy, go to the church before the Holy Sacrament.
Since everything is possible for the one who trusts in the Lord. On the contrary, the person who doubts is often depressed and unhappy. The true Christian is stable in all ways and acts according to the conscience. Thus, they live a good life and receive the God's blessings. Moreover, the disciples of Christ help others to find God and to love him with the whole heart.