God is beautiful and it follows that following him is also beautiful. The best way to carry this out is to be obedient to him.
In today's reading from Hebrew 1, Paul tells us that God spoke to us through the Son, whom he made heir of all things and through whom he created the universe. This is a complete turnabout from his early days during which he persecuted Christians relentlessly. Then Jesus called and he obeyed. Again, in the Gospel reading from Mark 1, Jesus calls Simon, Andrew, James, and John to become fishers of men and they obey him by dropping everything right there and then to follow him.
Obedience to God leads to eternal life, while rebellion against him brings on eternal separation from him. Learn to say yes the moment God calls and he'll fill your heart with joy and peace.