Through work, value is created. Thus the broad capital markets of the world will increase in value over time.
Invest utilizing low cost vehicles such as index funds and exchange traded funds.
Market return, less investment expenses should be your expectation.
Avoid the mistake of missing market return. Broadly diversify by owning many thousands of companies to spread your risk.
Have a written Investment Policy Statement (IPS) that clearly defines your allocation among bonds and stocks—both foreign and domestic. Stocks should be further dissected into growth versus value and small versus large. Your IPS is the key to a better night's sleep.
Keep emotion out of your investment decisions. If you don't trust your ability to do this, find a Wealth Coach who will serve as your advocate and help you avoid the mistakes so many investors make.
Take only as much risk as required to meet your lifetime goals.