I have gained self-confidence, courage and the support of my people.
India deliberately aggravated Sri Lanka's ethnic crisis. It destabilized Sri Lanka [by training and arming Tamil militants, including the Tigers] so that it could play a dominant role in bringing Sri Lanka within its sphere of influence.
If somebody trusts me, then I will reciprocate.
If I am cheated or betrayed, I will react.
A small nation can fight a superpower with determination and dedication.
However formidable a military power you may be, you cannot impose upon a people anything against their will.