Choosing low-cost mutual funds, opting for passive investments, such as an ETF or index fund, and knowing how much you pay in fees can go a long way toward reducing the amount you pay to invest. Before you sell your current investments, make sure you understand the impacts of that sale and the taxes you may have to pay. Sometimes, it may be worth paying taxes to lower the rates you pay. However, investments that have resulted in large taxable profits can generate a substantial tax bill that you cannot pay.
You may want to slowly move your high-fee investments to smaller parts, as you can afford it in these cases.