Early retirement generally demands a serious commitment towards money saving and following a frugal lifestyle. You can achieve early retirement with thoughtful planning, disciplined saving/investing and controlled spending.

Early retirement comes with many challenges like- Inflation, rise of life expectancy and high health inflation/cost, boredom, losing social connections etc.. Thus, make sure to give a good thought to these factors and make an effective plan. 

Here are few tips to guide you for early retirement goal:

• Decide the goal amount you want to accumulate for retirement. Do consider inflation, life expectancy and health cost with your current age, savings, returns on investment etc.. Also, find out what is ‘early’ means to you, is it retire at 35 or in 40s?
• Decide what kind of lifestyle you want to lead during your retirement. this will help you to plan well and decide the corpus needed, savings required etc. 
• Make sure you have enough term and health insurance. Do not forget to count your liabilities, loan amount while taking the term plan. It’s not an investment but a protection during hard time.
• Keep more than enough (minimum 6 months expenses) in your emergency fund.
• Make budget, even for small expanse. Keep track of your cash flows.
• Save and invest. Start early with saving and investing since achieving huge retirement corpus successfully depends on two factors- Time & Rate of Return. More saving and wise investments, especially in equity and equity related instruments can help you accumulate decent sum for your goal.
• Avoid use of credit cards and pay off your debt asap. Early retirement means being financially independent without any loans and liabilities.
• Protect your portfolio- Make sure to protect your portfolio by adding some exposure to hedge instruments like gold and conservative funds like index funds.
• Understand the challenges– Early retirement planning is not about planning only for accumulating retirement corpus. It’s also comprises of understanding the challenges like health issues/cost, retirement benefits, taxation and planning for these factors.
• Make sure you are also considering about life after taking early retirement. Life could get boring during retirement; therefore, you should plan in advance for what you’ll do in retirement.
• Learn an art or follow your hobby like painting, guitar or any instrument playing etc.. It can help you during your retirement to earn passive income and will keep you busy without any stress. Make sure you’re retiring to something you want to do, such as following a hobby, to travel or explore or time to family activities etc.
• Find & Try to increase your income source. Having passive income source(s) during retirement is good. You can do it by freelancing (if you are good at any particular skill), blogging, YouTube videos, car rental/cabs, coaching/mentoring etc.
• Last but not least, find out the place for your retirement, if possible. Yes, find a place which is peaceful, helps you with your hobby/hobby related job during retirement and where cost of living is low.

Uncertainties will be there, always. Therefore, plan well and execute it effectively.

Note:- Above article based on one of my Quora Answer.