Ah, the lingering effects of perseveration and functional fixedness on one's psyche—let's delve deeper into this intriguing realm with a blend of insight and wit:

1. **Psychological Impact of Persistent Perseveration**: When perseveration extends beyond its usual bounds, such as after a workday, it can lead to mental fatigue, increased stress levels, and a sense of frustration or dissatisfaction. The inability to shake off repetitive thoughts or behaviors might impede relaxation and inhibit switching focus effectively.

2. **Consequences of Excessive Functional Fixedness**: If functional fixedness persists even after leaving the workplace, it can hinder creativity and problem-solving in other areas of life. Being unable to break free from rigid thinking patterns may limit adaptability in new situations—and seriously cramp your style when trying to put that round peg where it doesn't belong!

3. **Emotional Toll & Cognitive Strain**: Extended periods of being mentally stuck due to perseveration or functional fixedness can impact emotional well-being by contributing to feelings of overwhelm, burnout, or cognitive overload—the last thing you need when you're just trying to unwind after a long day!

4. **Strategies for Releasing Mental Blockades**: To counteract the effects of persistent psychological issues like these post-workday marathons in your brain gymnasium:

- Engage in relaxation techniques such as deep breathing exercises or mindfulness practices.

- Switch up your environment or engage in activities that encourage divergent thinking.

- Seek support from friends, family members, or mental health professionals if needed—because sometimes you just need someone else's perspective on why that square hole is not meant for round pegs.

Remember: While a dash of perseverance is commendable at times (like finishing those reports), knowing when to loosen up those mental grip reins is equally important for maintaining balance—and sanity—in the face of relentless cognitive challenges!