
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given a function $y=f(x)$ defined on $R$, where $f(x) > 0$ when $x > 0$, and ${f'}(x)$ is its derivative function, satisfying ${f'}(x) < f(x)$ always holds, determine the relationship between $3f(0)$, $f(a)$, and $af(1)$ when $0 < a < 1$.

Present the answer in LaTex format: \boxed{Your answer}
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