Lakshmi, the goddess of fortune, is called chanchal. Use it in worship of Lord Krishna.
The Lord can be served simply by adoring Him and accepting Him.
Srimad Bhagavatam 2.9.36,
A devotee should always aspire to live in the association of advanced devotees and engage in the service of the Lord through the parampara system.
As a kshatriya has no problems while taking the wounds on his chest. similarly a devotee has no problems taking wounds while serving Krishna.
Determination means to serve Krishna inspite of bodily inconveniences.