Here is some food for thought. Inner peace is often characterized as a special state of mind. It is discussed, especially by so-called spiritual teachers, gurus, etc. as a goal to be achieved. Further, many of them claim that their special teachings and/or method is the best way to this goal.
The state of mind to which all this refers is always already available. If you are someone for whom peace of mind is important, read this several times. Take each sentence and meditate on it so the meaning becomes clear.
Should you listen to me? No! Just take some time to watch your own mind and relate it to what is described here. See if it starts to make sense. If not, let it go.
Refuse attention to things, let things come and go.
Desires and thoughts are also things. Disregard them.
Since immemorial time, the dust of events was covering the clear mirror of your mind, so that only memories you could see.
Brush off the dust before it has time to settle; this will lay bare the old layers until the true nature of your mind is discovered.
It is all very simple and comparatively easy; be earnest and patient, that is all.
Dispassion, detachment, freedom from desire and fear, from all self-concern, mere awareness, free from memory and expectation, this is the state of mind to which discovery can happen.
After all, liberation is but the freedom to discover.
—Sri Nisargadatta Maharaj