Training dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — DreamForth

To dream that you are training for something indicates that you lack assertiveness and confidence about your abilities. This dream may also reflect a desire to improve your personality.
Source: Dream Symbols and Analysis Author: DreamForth

Interpretation 2 — Margaret Hamilton

Influencing one’s life
Source: Dream Dictionary Unlimited Author: Margaret Hamilton