No, you do not need a partner to run an investment portfolio. Here are some key points on investing successfully on your own:

– Set clear goals – Establish your investment objectives, time horizon, and risk tolerance. Be specific about what you want to achieve.

– Do your research – Gain an understanding of asset classes, portfolio allocation, individual investments, fees, and markets. Leverage free online resources.

– Start small – You can begin investing on your own even with modest amounts of money. Consistency is key.

– Automate processes – Set up automatic transfers from your bank to investment accounts to enforce consistent investing.

– Stick to a plan – Have a written investment policy statement to guide your asset allocation and rebalancing. Avoid reacting emotionally.

– Use passive investments – Opt for index funds and ETFs over stock picking. This provides instant diversification and lower expenses.

– Reinvest earnings – Let compounding work for you by reinvesting dividends and capital gains.

– Review periodically – Check in on your portfolio at regular intervals and rebalance when allocations drift.

– Adjust as needed – Update your investment plan as your goals, time horizon or risk appetite changes.

While having an investing partner provides another perspective, it is certainly feasible to invest successfully as an individual. The key is doing your homework, automating the process, and sticking to your plan.