It is easy to drown a small business in software. Every problem seems to have an app, and the stack grows until you spend more time managing tools than doing work. A lean, deliberate stack is almost always better.
Start with the essentials
A one-person business really needs only a few categories covered: a way to communicate, a way to track work and tasks, a way to handle money, and a way to store files. Pick one solid tool for each and resist adding more until you feel real pain.
Favor tools that do several jobs
An all-in-one that handles a few needs well usually beats stitching together many single-purpose apps. Fewer tools means less to maintain, fewer subscriptions, and fewer places for information to hide.
Make it work with support in mind
Choose tools that make it easy to bring in help, shared access, clear permissions, and a single source of truth. A clean stack is what lets you hand off work to a VA without a tangle of logins and lost context.
Audit before you add
Before adopting a new tool, ask whether something you already have can do the job. The best stack is not the most powerful, it is the simplest one that covers what you actually need, so you spend your time on work, not on wiring.