By means of what you do during meditation - going beyond the three gunas (satvik, rajasic and tamasic). In meditation we get deep rest; freshness, purity, peace and joy arise spontaneously.
How does joy arise? When you are at peace, when you are at rest. That is why it is said, ‘nistraye gunyo nitya satvastu’, as you rise above the three gunas, sattva increases.
Do not be attached even to good deeds. Drop everything. In deep rest none of these gunas exist. In sleep there is tamo guna, in work there is rajo guna, and when you are not working or engaged in thought, there is sato guna.
When you sit in meditation, in that state of thoughtlessness, you transcend the three gunas; and when you come back, sattva rises. By the way, rajo guna is useful in getting rid of tamo guna through awakening frustration and anger. As sato guna increases, rajo guna quiets down. And when you get past sato guna also, sattva is enhanced.
