Your thread title says
trading, but your post text says
investing - there is a huge range of psychological differences and analysis factored into both of these strategies.
Personally, I have stayed away from
trading because it takes lots and lots of time looking at charts, knowledge and practice simply to break even.
However, I love
investing. I keep a good portion of my portfolio allocated in US and foreign index funds to minimize risk, a very small bit in gold, a good amount in cash, and 30% of my portfolio I use to play around with stocks I think may have high upside potential. I don't invest in bonds.
If you want to get started in investing, I really recommend you begin by reading about the "bogleheads" investment philosophy - the philosophy is built on the idea that success in the market comes from putting your money in low-risk and low-fee index funds that distribute your risk among multiple industries. This is the best place to begin your investing journey - start by understanding the three-fund portfolio concept described here:
https://www.bogleheads.org/wiki/Three-fund_portfolio
Also, lurk on the bogleheads.org forum here:
https://www.bogleheads.org/
Start listening to the Frank Curzio podcast, here :
http://www.frankcurzio.com/ (lots of great ideas about the stock market).
After you have a relatively good amount of money stashed in your three-fund portfolio you can look into other stuff. TBH I've lost a lot of money by picking individual stocks (and also made a lot). Right now, Ive probably just broken even. My index fund portfolio, however, is performing much much better.