3. Set your sell points. Before you ever buy an ETF, determine the point at which you’ll sell it. Knowing this point in advance and giving yourself time to become comfortable with the idea of selling will make it that much easier to do so. [5 Trading Rules for ETF Investors.]

4. Manage your portfolio: Watch what’s happening and make adjustments accordingly. This doesn’t mean you should watch your portfolio like a hawk, but don’t relegate it to the floor of the closet. You’ll need to make periodic adjustments, so know when to do so. You can sign up for rebalancing alerts to help you remember to do this.

If you’re ready to start building your portfolio, check out our powerful portfolio-building tools on ETF Trends. You can also add ETFs to your watchlist on your personalized Dashboard before you add them to your portfolio.

And if you’d rather not tackle your own portfolio, we have dozens of model portfolios available for you to choose from.

Tisha Guerrero contributed to this article.