The right balance... I have seen this mentioned many times. Can someone explain what is meant by this.

I started on 30mg 4 times a day, and the effect was wonderful.
But it didn't last, within 4 months I was back to where I started.
Increased to 60mg 6 times a day, the effect was a great improvement, but not so much as when I started on 30mg.
But it didn't last either, within 2 months I am back to where I started.

It feels as though I am running to try to keep up with an express train that is gaining speed faster than I can. How do I get the right balance.