We are not given a good life or a bad life. We are given life. And it`s up to you to make it good or bad.
Soon I'll be doing a post of my favourite books for personal growth and motivation. The list is long as I've read so many good ones and I have to try and cut it down. Sometimes it's hard to stay positive with life often getting in the way. I feed my mind daily otherwise I notice my outlook begins to shift. Try to read 10 pages from a positive book every day. Start and finish your day thinking of what you are grateful for even if you've had a crummy day. Focus on the good until you can feel it throughout your body.
All the best to you,