The Power of Now by Echart Tolle is an excellent read to change your perspective. I noted so many insightful excerpts and wanted to share a few with you.
To be identified with your mind is to be trapped in time: the compulsion to live almost exclusively through memory and anticipation.” pg 48
“The more you are focused on time – past and future – the more you miss the NOW, the most precious thing there is.” pg 49
“Acute unhappiness can be a great awakener.” pg 174
“The down cycle is absolutely essential for spiritual realization. You must have failed deeply on some level or experienced some deep loss or pain to be drawn to the spiritual dimension… Failure lies concealed in every success, and success in every failure.” pg 183
“All negativity is resistance.” pg 188
There is much more, and I highly recommend this book to anyone looking to expand their ways of thinking!