You're mixing verb phrases and noun phrases, which is a problem with parallelism.
Really, each item should be of one form or the other.
I aspire to help organizations achieve their goals by solving  issues in the [area] of customer focus, engaging employees, adapting for change, managing [complex environments], and balancing work [and] life.
I made some additional tweaks in the areas with square brackets, but the main point is that all of the items now start with an -ing-formed verb.
Now it doesn't have any problems with grammar.
As some comments have said, however, you might want to do something to make it easier to parse.
You could use a vertical list:
I aspire to help organizations achieve their goals by
- solving issues in the area of customer focus,
- engaging employees,
- adapting for change,
- managing complex environments, and
- balancing work life.
Or, you could keep everything horizontal but help the items stand out like this:
I aspire to help organizations achieve their goals by (1) solving issues in the area of customer focus, (2) engaging employees, (3) adapting for change, (4) managing complex environments, and (5) balancing work and life.