Raise yourself, let your intellect is illuminated by the grace of God, by the grace of the Divine Mother that you enter in this life and you realize the opportunity. Realize where you come from, realize that you actually perform your job, your mission and realize where you go, what is your real duty in life and let that light shine through you. Become a messenger of love, a messenger of the Divine. Do not limit yourself to what your mind perceive that you are. 
The clay lamp is very symbolic, we say: 'God, You are the light, and we are the rod. " It is the connection we have with the Divine. And clay lamp represents our body, it symbolizes that our body is only dust and dust is because one day we will leave. Our body does not remain the same, it changes, until we leave. The lamp symbolizes our burning clay body that is similar to the medium of clay, with a burning, burning light, the love that burns inside of you. 
Diwali allows us to remember that inner light that is present in every person in every part of God's creation and not just us sitting there to celebrate Diwali. You can think of being more special than anyone else because you're sitting there , but no, it's not like that. We are not special, you know. When we think of ourselves be closer to the Divine is wrong! It is our ignorance that makes us think that we are special because God loves everyone the same way. And it's the same light that shines in you, in me, everyone. It just takes time to see it. When your mind will be calm, when your heart is completely open, you see, and feel this light, you feel that love, and that is the true meaning of Diwali. 
Whether we realize it or not, we have lots of karma or not, whether we are Hindu or not, it has no importance because, beyond the limitations of this body that we have imposed, that we love and nothing else. When we light the lamps during Diwali we therefore remind ourselves what we really are. You do not just turn on the light outside, but you must turn on the light in you and realize that this light is not only you, but it is everywhere. The Divine is not limited, it is everywhere. 
The festival of Diwali is here to remind us of our inner light, to remind us that we are that light. When we light the little oil lamp external to us, it symbolizes our inner light, which must also be lit. From the darkness, the light will shine. So from our own darkness created by the mind from darkness we create intentionally or unintentionally, we ask the Divine to bring out the light. We're so caught up in our daily routine that we often forget that light, we forget why we're here, we forget our true purpose and we forget the love that is in us all. Putting limits, but what about what we feel? What is this love that we are looking all the time? We forget. So Diwali reminds us that we are that light and we are forever the light. 
