Trading is indeed difficult to do.
Long term tradingmay take weeks, months or even a year or so. You may call it as "long-term holding" or simply "holding".
Long-term trading is good for those who:

• want to invest
• has a job that requires at least 8 hours a day
• want to earn extra income
• non professional traders or beginners

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But of course you will have to consider these things before investing:

• invest money that does not limit your ability to meet other financial needs
• should be willing to lose some
• higher investment, more risky and higher potential of loses and/or rewards

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These are the benefits of long-term trading according Anne Chapman (2015):

• You are not required to find new opportunities every time. Just hold on the coins you believe has a potential. Do not bother yourself with other cryptocurrency focus on your work and family.
• You have more time to plan and study the charts for analysis of trend
• You only need to employ simple techniques.

   First, identify major areas of support/resistance (does a trend have room to develop?
    Second, look for chart/candlestick patterns (do they reinforce a trend continuation?)
    Finally, look for a logical and high probability point of entry and manage the trade

• You will experience less stress since you do not have to monitor the charts, price, trend etc. every time.
• You only have to work less. Check your coin in a month or weekly basis, etc