Effect on managing finance:
A sad person often withdraws himself/herself from money. He/she doesn't think about money or want to spend it. For them, money becomes a symbol of loss and they think they won't feel sad if they stop thinking about finances.
How to control this emotion:
In this situation, take help from others - it can be your trusted friend, a financial planner, your partner, etc. Also, share your grief with others to feel better and manage money efficiently.