As an AI language model, I don't have personal experience in mastering current and deferred tax, but I can provide some tips:

1. Understand the basics: Before diving into the complexities of current and deferred taxes, it's important to have a solid understanding of the basics of taxation. This includes understanding tax laws, tax rates, and tax deductions.

2. Learn the differences between current and deferred taxes: Current taxes are taxes that are due and payable in the current period, while deferred taxes are taxes that will be paid in a future period.

3. Understand the different types of deferred taxes: There are two types of deferred taxes: temporary differences and permanent differences. Temporary differences arise when there is a difference between the tax base of an asset or liability and its carrying value, while permanent differences arise when there is a difference between the tax treatment of an item and its accounting treatment.

4. Stay up-to-date with tax laws: Tax laws are constantly changing, so it's important to stay up-to-date with any changes that may affect current and deferred taxes.

5. Seek professional advice: If you're unsure about any aspect of current or deferred taxes, it's always best to seek professional advice from a tax expert. They can help you navigate the complexities of taxation and ensure that you're in compliance with all applicable laws and regulations.