Wilting and browning or yellowing of leaves.
The wilting of leaves is a water related issue, either under- or overwatering. If your Peace lily and Areca palm leaves are drooping and have brown edges, its due to underwatering and an irregular watering schedule. Yellowing leaves of money plant are also a sign of either over watering or underwatering. The Sansevieria is a drought resistant plant and mushy wilting leaves are due to overwatering.
While the Sansevieria is a slow grower, giving it good light and prescribed fertilisers can increase its growth rate. As for the other three, like any plant they will grow faster with sufficient lighting and slower in low to medium light. Although, avoid direct sunlight for all four plants.
The Peace Lily loves a regular watering schedule, don’t let the soil get completely dry before watering again. The money plant needs to be watered when the soil goes dry and can tolerate a little bit of underwatering. The Areca Palm needs watering at regular interval, water when the topsoil is dry. The sansevieria thrives on neglect and does better with underwatering than overwatering, water it once the soil is completely dry.